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//--------------------------------------------------------------------------- |
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#include "GStr.h" |
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#include <stdio.h> |
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#include <string.h> |
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#include <ctype.h> |
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#include "GBase.h" |
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#include <stdarg.h> |
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#include <errno.h> |
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|
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//--------------------------------------------------------------------------- |
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|
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GStr::Data GStr::null_data; |
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|
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//========================================= |
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|
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GStr::Data * GStr::new_data(int length) { |
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//static method to return a new Data object (allocate length) |
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//content is undefined, but it's null terminated |
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if (length > 0) { |
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Data* data; |
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GMALLOC(data, sizeof(Data)+length); |
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data->ref_count = 0; |
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data->length = length; |
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data->chars[length] = '\0'; |
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return data; |
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} |
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else |
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return &null_data; |
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} |
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|
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GStr::Data* GStr::new_data(const char* str) { |
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//static method to return a new Data object (allocate length) |
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//as a copy of a given string |
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if (str==NULL) return &null_data; |
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int length=strlen(str); |
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if (length > 0) { |
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Data* data; |
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GMALLOC(data, sizeof(Data)+length); |
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strcpy(data->chars, str); |
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data->ref_count = 0; |
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data->length = length; |
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data->chars[length] = '\0'; |
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return data; |
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} |
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else |
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return &null_data; |
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} |
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|
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void GStr::replace_data(int len) { |
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|
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if (len == my_data->length && my_data->ref_count <= 1) |
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return; |
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|
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if (my_data != &null_data && --my_data->ref_count == 0) |
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GFREE(my_data); |
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|
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if (len > 0) { |
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//my_data = (Data *) malloc(sizeof(Data) + len); |
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GMALLOC(my_data, sizeof(Data) + len); |
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my_data->ref_count = 1; |
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my_data->length = len; |
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my_data->chars[len] = '\0'; |
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} |
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else |
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my_data = &null_data; |
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} |
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|
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void GStr::replace_data(Data *data) { |
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if (my_data != &null_data && --my_data->ref_count == 0) |
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GFREE(my_data); |
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if (data != &null_data) |
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data->ref_count++; |
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my_data = data; |
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} |
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|
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void GStr::make_unique() {//make sure it's not a reference to other string |
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if (my_data->ref_count > 1) { |
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Data *data = new_data(length()); |
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::memcpy(data->chars, chars(), length()); |
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my_data->ref_count--; |
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my_data = data; |
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my_data->ref_count++; |
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} |
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} |
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|
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bool operator==(const char *s1, const GStr& s2){ |
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if (s1==NULL) return s2.is_empty(); |
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return (strcmp(s1, s2.chars()) == 0); |
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} |
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|
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bool operator<(const char *s1, const GStr& s2) { |
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if (s1==NULL) return !s2.is_empty(); |
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return (strcmp(s1, s2.chars()) < 0); |
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} |
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|
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bool operator<=(const char *s1, const GStr& s2){ |
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if (s1==NULL) return true; |
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return (strcmp(s1, s2.chars()) <= 0); |
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} |
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|
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bool operator>(const char *s1, const GStr& s2) { |
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if (s1==NULL) return false; |
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return (strcmp(s1, s2.chars()) > 0); |
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} |
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|
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|
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GStr::GStr():my_data(&null_data) { |
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fTokenDelimiter=NULL; |
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fTokenizeMode=tkCharSet; |
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fLastTokenStart=0; |
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readbuf=NULL; |
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readbufsize=0; |
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} |
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|
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GStr::GStr(const GStr& s): my_data(&null_data){ |
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fTokenDelimiter=NULL; |
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fTokenizeMode=tkCharSet; |
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fLastTokenStart=0; |
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readbuf=NULL; |
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readbufsize=0; |
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replace_data(s.my_data); |
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} |
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|
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GStr::GStr(const char *s): my_data(&null_data) { |
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fTokenDelimiter=NULL; |
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fTokenizeMode=tkCharSet; |
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fLastTokenStart=0; |
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readbuf=NULL; |
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readbufsize=0; |
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my_data=new_data(s); |
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my_data->ref_count = 1; |
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} |
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|
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GStr::GStr(const int i): my_data(&null_data) { |
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fTokenDelimiter=NULL; |
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fTokenizeMode=tkCharSet; |
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fLastTokenStart=0; |
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readbuf=NULL; |
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readbufsize=0; |
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char buf[20]; |
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sprintf(buf,"%d",i); |
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const int len = ::strlen(buf); |
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replace_data(len); |
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::memcpy(chrs(), buf, len); |
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} |
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|
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GStr::GStr(const double f): my_data(&null_data) { |
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fTokenDelimiter=NULL; |
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fTokenizeMode=tkCharSet; |
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fLastTokenStart=0; |
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readbuf=NULL; |
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readbufsize=0; |
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char buf[20]; |
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sprintf(buf,"%f",f); |
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const int len = ::strlen(buf); |
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replace_data(len); |
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::memcpy(chrs(), buf, len); |
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} |
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|
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GStr::GStr(char c, int n): my_data(&null_data) { |
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fTokenDelimiter=NULL; |
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fTokenizeMode=tkCharSet; |
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fLastTokenStart=0; |
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readbuf=NULL; |
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readbufsize=0; |
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replace_data(n); ::memset(chrs(), c, n); |
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} |
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|
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GStr::~GStr() { |
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if (my_data != &null_data && --my_data->ref_count == 0) |
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GFREE(my_data); |
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GFREE(fTokenDelimiter); |
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GFREE(readbuf); |
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} |
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|
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char& GStr::operator[](int idx){ |
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//returns reference to char (can be l-value) |
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if (idx < 0) idx += length(); |
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if (idx < 0 || idx >= length()) invalid_index_error("operator[]"); |
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make_unique(); //because the user will probably modify this char! |
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return chrs()[idx]; |
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} |
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|
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char GStr::operator[](int idx) const { |
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//returns char copy (cannot be l-value!) |
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if (idx < 0) idx += length(); |
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if (idx < 0 || idx >= length()) invalid_index_error("operator[]"); |
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return chars()[idx]; |
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} |
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|
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GStr& GStr::operator=(const GStr& s) { |
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make_unique(); //edit operation ahead |
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replace_data(s.my_data); |
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return *this; |
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} |
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|
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GStr& GStr::operator=(const char *s) { |
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make_unique(); //edit operation ahead |
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if (s==NULL) { |
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replace_data(0); |
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return *this; |
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} |
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const int len = ::strlen(s); replace_data(len); |
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::memcpy(chrs(), s, len); |
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return *this; |
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} |
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|
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GStr& GStr::operator=(const double f) { |
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make_unique(); //edit operation ahead |
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char buf[20]; |
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sprintf(buf,"%f",f); |
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const int len = ::strlen(buf); |
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replace_data(len); |
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::memcpy(chrs(), buf, len); |
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return *this; |
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} |
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|
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GStr& GStr::operator=(const int i) { |
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make_unique(); //edit operation ahead |
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char buf[20]; |
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sprintf(buf,"%d",i); |
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const int len = ::strlen(buf); |
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replace_data(len); |
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::memcpy(chrs(), buf, len); |
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return *this; |
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} |
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|
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bool GStr::operator==(const GStr& s) const { |
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if (s.is_empty()) return is_empty(); |
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return (length() == s.length()) && |
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(memcmp(chars(), s.chars(), length()) == 0); |
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} |
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|
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bool GStr::operator==(const char *s) const { |
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if (s==NULL) return is_empty(); |
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return (strcmp(chars(), s) == 0); |
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} |
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|
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bool GStr::operator<(const GStr& s) const { |
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if (s.is_empty()) return false; |
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return (strcmp(chars(), s.chars()) < 0); |
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} |
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|
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bool GStr::operator<(const char *s) const { |
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if (s==NULL) return false; |
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return (strcmp(chars(), s) < 0); |
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} |
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|
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bool GStr::operator<=(const GStr& s) const { |
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if (s.is_empty()) return is_empty(); |
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return (strcmp(chars(), s.chars()) <= 0); |
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} |
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|
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bool GStr::operator<=(const char *s) const { |
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if (s==NULL) return is_empty(); |
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return (strcmp(chars(), s) <= 0); |
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} |
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|
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bool GStr::operator>(const GStr& s) const { |
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if (s.is_empty()) return !is_empty(); |
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return (strcmp(chars(), s.chars()) > 0); |
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} |
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|
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bool GStr::operator>(const char *s) const { |
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if (s==NULL) return !is_empty(); |
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return (strcmp(chars(), s) > 0); |
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} |
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|
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bool GStr::operator>=(const GStr& s) const { |
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if (s.is_empty()) return true; |
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return (strcmp(chars(), s.chars()) >= 0); |
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} |
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|
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bool GStr::operator>=(const char *s) const { |
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if (s==NULL) return true; |
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return (strcmp(chars(), s) >= 0); |
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} |
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|
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bool GStr::operator!=(const GStr& s) const { |
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if (s.is_empty()) return !is_empty(); |
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return (length() != s.length()) || |
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(memcmp(chars(), s.chars(), length()) != 0); |
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} |
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|
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bool GStr::operator!=(const char *s) const { |
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if (s==NULL) return !is_empty(); |
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return (strcmp(chars(), s) != 0); |
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} |
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|
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GStr& GStr::operator+=(const GStr& s) { |
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return append((const char *)s); |
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} |
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|
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GStr& GStr::operator+=(const char* s) { |
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return append(s); |
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} |
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|
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GStr& GStr::operator+=(const char c) { |
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char buf[4]; |
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sprintf(buf,"%c",c); |
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return append(buf); |
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} |
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|
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GStr& GStr::operator+=(const int i) { |
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char buf[20]; |
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sprintf(buf,"%d",i); |
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return append(buf); |
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} |
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|
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|
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GStr& GStr::operator+=(const double f) { |
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char buf[30]; |
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sprintf(buf,"%f",f); |
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return append(buf); |
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} |
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|
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bool GStr::is_empty() const { |
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//return my_data == &null_data; |
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return (length()==0); |
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} |
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|
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GStr GStr::copy() const { |
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GStr newstring(*this); |
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return newstring; |
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} |
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|
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GStr& GStr::clear() { |
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make_unique(); //edit operation ahead |
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replace_data(0); |
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return *this; |
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} |
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|
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int GStr::index(const GStr& s, int start_index) const { |
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return index(s.chars(), start_index); |
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} |
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|
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bool GStr::contains(const GStr& s) const { |
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return (index(s, 0) >= 0); |
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} |
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|
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bool GStr::contains(const char *s) const { |
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return (index(s, 0) >= 0); |
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} |
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|
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bool GStr::startsWith(const char *s) const { |
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//return (index(s, 0) == 0); |
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return ::startsWith(this->chars(), s); |
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} |
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|
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bool GStr::startsWith(const GStr& s) const { |
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//return (index(s, 0) == 0); |
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return ::startsWith(this->chars(), s.chars()); |
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} |
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|
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bool GStr::endsWith(const char *s) const { |
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//return (index(s, 0) == 0); |
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return ::endsWith(this->chars(), s); |
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} |
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|
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bool GStr::endsWith(const GStr& s) const { |
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//return (index(s, 0) == 0); |
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return ::endsWith(this->chars(), s.chars()); |
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} |
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|
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bool GStr::contains(char c) const { |
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return (index(c, 0) >= 0); |
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} |
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|
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GStr& GStr::format(const char *fmt,...) { |
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// Format as in sprintf |
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make_unique(); //edit operation ahead |
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char* buf; |
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GMALLOC(buf, strlen(fmt)+1024); |
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va_list arguments; |
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va_start(arguments,fmt); |
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//+1K buffer, should be enough for common expressions |
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int len=vsprintf(buf,fmt,arguments); |
378 |
va_end(arguments); |
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replace_data(len); //this also adds the '\0' at the end! |
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//and sets the right len |
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::memcpy(chrs(), buf, len); |
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GFREE(buf); |
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return *this; |
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} |
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|
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GStr& GStr::appendfmt(const char *fmt,...) { |
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// Format as in sprintf |
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make_unique(); //edit operation ahead |
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char* buf; |
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GMALLOC(buf, strlen(fmt)+1024); |
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va_list arguments; |
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va_start(arguments,fmt); |
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//+1K buffer, should be enough for common expressions |
394 |
vsprintf(buf,fmt,arguments); |
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va_end(arguments); |
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append(buf); |
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GFREE(buf); |
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return *this; |
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} |
400 |
|
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GStr& GStr::trim(char c) { |
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register int istart; |
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register int iend; |
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for (istart=0; istart<length() && chars()[istart]==c;istart++) ; |
405 |
if (istart==length()) { |
406 |
make_unique(); //edit operation ahead |
407 |
replace_data(0); //string was entirely trimmed |
408 |
return *this; |
409 |
} |
410 |
for (iend=length()-1; iend>istart && chars()[iend]==c;iend--) ; |
411 |
int newlen=iend-istart+1; |
412 |
if (newlen==length()) //nothing to trim |
413 |
return *this; |
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make_unique(); //edit operation ahead |
415 |
Data *data = new_data(newlen); |
416 |
::memcpy(data->chars, &chars()[istart], newlen); |
417 |
replace_data(data); |
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return *this; |
419 |
} |
420 |
|
421 |
GStr& GStr::trim(const char* c) { |
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register int istart; |
423 |
register int iend; |
424 |
for (istart=0; istart<length() && strchr(c, chars()[istart])!=NULL ;istart++) ; |
425 |
if (istart==length()) { |
426 |
replace_data(0); //string was entirely trimmed |
427 |
return *this; |
428 |
} |
429 |
for (iend=length()-1; iend>istart && strchr(c, chars()[iend])!=NULL;iend--) ; |
430 |
int newlen=iend-istart+1; |
431 |
if (newlen==length()) //nothing to trim |
432 |
return *this; |
433 |
make_unique(); //edit operation ahead |
434 |
Data *data = new_data(newlen); |
435 |
::memcpy(data->chars, &chars()[istart], newlen); |
436 |
replace_data(data); |
437 |
return *this; |
438 |
} |
439 |
|
440 |
GStr& GStr::trimR(char c) { |
441 |
//only trim the right end |
442 |
//register int istart; |
443 |
register int iend; |
444 |
for (iend=length()-1; iend>=0 && chars()[iend]==c;iend--) ; |
445 |
if (iend==-1) { |
446 |
replace_data(0); //string was entirely trimmed |
447 |
return *this; |
448 |
} |
449 |
int newlen=iend+1; |
450 |
if (newlen==length()) //nothing to trim |
451 |
return *this; |
452 |
make_unique(); //edit operation ahead |
453 |
|
454 |
Data *data = new_data(newlen); |
455 |
::memcpy(data->chars, chars(), newlen); |
456 |
replace_data(data); |
457 |
return *this; |
458 |
} |
459 |
|
460 |
GStr& GStr::trimR(const char* c) { |
461 |
register int iend; |
462 |
for (iend=length()-1; iend>=0 && strchr(c,chars()[iend])!=NULL;iend--) ; |
463 |
if (iend==-1) { |
464 |
replace_data(0); //string was entirely trimmed |
465 |
return *this; |
466 |
} |
467 |
int newlen=iend+1; |
468 |
if (newlen==length()) //nothing to trim |
469 |
return *this; |
470 |
make_unique(); //edit operation ahead |
471 |
Data *data = new_data(newlen); |
472 |
::memcpy(data->chars, chars(), newlen); |
473 |
replace_data(data); |
474 |
return *this; |
475 |
} |
476 |
|
477 |
|
478 |
GStr& GStr::chomp(const char* cstr) { |
479 |
register int iend; |
480 |
if (cstr==NULL || *cstr==0) return *this; |
481 |
//check if this ends with cstr |
482 |
int cend=strlen(cstr)-1; |
483 |
iend=my_data->length-1; |
484 |
while (iend>=0 && cend>=0) { |
485 |
if (my_data->chars[iend]!=cstr[cend]) return *this; |
486 |
iend--; |
487 |
cend--; |
488 |
} |
489 |
if (iend==-1) { |
490 |
replace_data(0); //string will be entirely trimmed |
491 |
return *this; |
492 |
} |
493 |
int newlen=iend+1; |
494 |
make_unique(); //edit operation ahead |
495 |
Data *data = new_data(newlen); |
496 |
::memcpy(data->chars, chars(), newlen); |
497 |
replace_data(data); |
498 |
return *this; |
499 |
} |
500 |
|
501 |
GStr& GStr::trimL(char c) { |
502 |
register int istart; |
503 |
for (istart=0; istart<length() && chars()[istart]==c;istart++) ; |
504 |
if (istart==length()) { |
505 |
replace_data(0); //string was entirely trimmed |
506 |
return *this; |
507 |
} |
508 |
int newlen=length()-istart; |
509 |
if (newlen==length()) //nothing to trim |
510 |
return *this; |
511 |
make_unique(); //edit operation ahead |
512 |
Data *data = new_data(newlen); |
513 |
::memcpy(data->chars, &chars()[istart], newlen); |
514 |
replace_data(data); |
515 |
return *this; |
516 |
} |
517 |
|
518 |
GStr& GStr::trimL(const char* c) { |
519 |
register int istart; |
520 |
for (istart=0; istart<length() && strchr(c,chars()[istart])!=NULL;istart++) ; |
521 |
if (istart==length()) { |
522 |
replace_data(0); //string was entirely trimmed |
523 |
return *this; |
524 |
} |
525 |
int newlen=length()-istart; |
526 |
if (newlen==length()) //nothing to trim |
527 |
return *this; |
528 |
make_unique(); //edit operation ahead |
529 |
|
530 |
Data *data = new_data(newlen); |
531 |
::memcpy(data->chars, &chars()[istart], newlen); |
532 |
replace_data(data); |
533 |
return *this; |
534 |
} |
535 |
|
536 |
GStr& GStr::padR(int len, char c) { |
537 |
//actually means align right in len |
538 |
if (length()>=len) return *this; //no room for padding |
539 |
make_unique(); //edit operation ahead |
540 |
Data *data = new_data(len); |
541 |
::memset(data->chars,c,len-length()); |
542 |
::memcpy(&data->chars[len-length()], chars(), length()); |
543 |
replace_data(data); |
544 |
return *this; |
545 |
} |
546 |
|
547 |
GStr& GStr::padL(int len, char c) { //align left the string |
548 |
if (length()>=len) return *this; //no room for padding |
549 |
make_unique(); //edit operation ahead |
550 |
Data *data = new_data(len); |
551 |
::memcpy(data->chars, chars(), length()); |
552 |
::memset(&data->chars[length()],c,len-length()); |
553 |
replace_data(data); |
554 |
return *this; |
555 |
} |
556 |
|
557 |
GStr& GStr::padC(int len, char c) { |
558 |
if (length()>=len) return *this; //no room for padding |
559 |
make_unique(); //edit operation ahead |
560 |
int istart=(len-length())/2; |
561 |
Data *data = new_data(len); |
562 |
if (istart>0) |
563 |
::memset(data->chars, c, istart); |
564 |
::memcpy(&data->chars[istart], chars(), length()); |
565 |
int iend=istart+length(); |
566 |
if (iend<len) |
567 |
::memset(&data->chars[iend],c,len-iend); |
568 |
replace_data(data); |
569 |
return *this; |
570 |
} |
571 |
|
572 |
GStr operator+(const char *s1, const GStr& s2) { |
573 |
const int s1_length = ::strlen(s1); |
574 |
|
575 |
if (s1_length == 0) |
576 |
return s2; |
577 |
else { |
578 |
GStr newstring; |
579 |
newstring.replace_data(s1_length + s2.length()); |
580 |
::memcpy(newstring.chrs(), s1, s1_length); |
581 |
::memcpy(&(newstring.chrs())[s1_length], s2.chars(), s2.length()); |
582 |
return newstring; |
583 |
} |
584 |
} |
585 |
|
586 |
//========================================= |
587 |
|
588 |
GStr GStr::operator+(const GStr& s) const { |
589 |
if (length() == 0) |
590 |
return s; |
591 |
else if (s.length() == 0) |
592 |
return *this; |
593 |
else { |
594 |
GStr newstring; |
595 |
newstring.replace_data(length() + s.length()); |
596 |
::memcpy(newstring.chrs(), chars(), length()); |
597 |
::memcpy(&(newstring.chrs())[length()], s.chars(), s.length()); |
598 |
return newstring; |
599 |
} |
600 |
} |
601 |
|
602 |
//========================================= |
603 |
|
604 |
GStr GStr::operator+(const char *s) const { |
605 |
|
606 |
const int s_length = ::strlen(s); |
607 |
|
608 |
if (s_length == 0) |
609 |
return *this; |
610 |
else { |
611 |
GStr newstring; |
612 |
newstring.replace_data(length() + s_length); |
613 |
::memcpy(newstring.chrs(), chars(), length()); |
614 |
::memcpy(&(newstring.chrs())[length()], s, s_length); |
615 |
return newstring; |
616 |
} |
617 |
} |
618 |
|
619 |
GStr GStr::operator+(const int i) const { |
620 |
char buf[20]; |
621 |
sprintf(buf, "%d", i); |
622 |
const int s_length = ::strlen(buf); |
623 |
GStr newstring; |
624 |
newstring.replace_data(length() + s_length); |
625 |
::memcpy(newstring.chrs(), chars(), length()); |
626 |
::memcpy(&(newstring.chrs())[length()], buf, s_length); |
627 |
return newstring; |
628 |
} |
629 |
|
630 |
GStr GStr::operator+(const char c) const { |
631 |
char buf[4]; |
632 |
sprintf(buf, "%c", c); |
633 |
const int s_length = ::strlen(buf); |
634 |
GStr newstring; |
635 |
newstring.replace_data(length() + s_length); |
636 |
::memcpy(newstring.chrs(), chars(), length()); |
637 |
::memcpy(&(newstring.chrs())[length()], buf, s_length); |
638 |
return newstring; |
639 |
} |
640 |
|
641 |
GStr GStr::operator+(const double f) const { |
642 |
char buf[30]; |
643 |
sprintf(buf, "%f", f); |
644 |
const int s_length = ::strlen(buf); |
645 |
GStr newstring; |
646 |
newstring.replace_data(length() + s_length); |
647 |
::memcpy(newstring.chrs(), chars(), length()); |
648 |
::memcpy(&(newstring.chrs())[length()], buf, s_length); |
649 |
return newstring; |
650 |
} |
651 |
|
652 |
|
653 |
//========================================= |
654 |
|
655 |
bool GStr::is_space() const { |
656 |
|
657 |
if (my_data == &null_data) |
658 |
return false; |
659 |
|
660 |
for (register const char *p = chars(); *p; p++) |
661 |
if (!isspace(*p)) |
662 |
return false; |
663 |
|
664 |
return true; |
665 |
} |
666 |
|
667 |
//========================================= |
668 |
|
669 |
GStr GStr::substr(int idx, int len) const { |
670 |
// A negative idx specifies an idx from the right of the string. |
671 |
if (idx < 0) |
672 |
idx += length(); |
673 |
|
674 |
// A length of -1 specifies the rest of the string. |
675 |
if (len < 0 || len>length()-idx) |
676 |
len = length() - idx; |
677 |
|
678 |
if (idx<0 || idx>=length() || len<0 ) |
679 |
invalid_args_error("substr()"); |
680 |
|
681 |
GStr newstring; |
682 |
newstring.replace_data(len); |
683 |
::memcpy(newstring.chrs(), &chars()[idx], len); |
684 |
return newstring; |
685 |
} |
686 |
|
687 |
GStr& GStr::reverse() { |
688 |
make_unique(); |
689 |
int l=0; |
690 |
int r=my_data->length-1; |
691 |
char c; |
692 |
while (l<r) { |
693 |
c=my_data->chars[l]; |
694 |
my_data->chars[l]=my_data->chars[r]; |
695 |
my_data->chars[r]=c; |
696 |
l++;r--; |
697 |
} |
698 |
return *this; |
699 |
} |
700 |
|
701 |
|
702 |
//transform: any character from 'from' is replaced with a coresponding |
703 |
//char from 'to' |
704 |
|
705 |
GStr& GStr::tr(const char *rfrom, const char* rto) { |
706 |
if (length() == 0 || rfrom==NULL || strlen(rfrom)==0) |
707 |
return *this; |
708 |
unsigned int l=strlen(rfrom); |
709 |
if (rto!=NULL && strlen(rto)!=l) |
710 |
invalid_args_error("tr()"); |
711 |
make_unique(); //edit operation ahead |
712 |
Data *data = new_data(length()); |
713 |
|
714 |
if (rto==NULL) { //deletion case |
715 |
char* s = my_data->chars; |
716 |
char* p; |
717 |
char* dest = data->chars; |
718 |
do { |
719 |
if ((p=strpbrk(s,rfrom))!=NULL) { |
720 |
memcpy(dest,s,p-s); |
721 |
dest+=p-s; |
722 |
s=p+1; |
723 |
} |
724 |
else { |
725 |
strcpy(dest, s); |
726 |
dest+=strlen(s); |
727 |
} |
728 |
} while (p!=NULL); |
729 |
(*dest)='\0'; |
730 |
} |
731 |
else { //char substitution case - easier! |
732 |
const char* p; |
733 |
for (int i=0; i<length(); i++) { |
734 |
if ((p=strchr(rfrom, my_data->chars[i]))!=NULL) |
735 |
my_data->chars[i]=rto[p-rfrom]; |
736 |
} |
737 |
} |
738 |
data->length=strlen(data->chars); |
739 |
replace_data(data); |
740 |
return *this; |
741 |
} |
742 |
|
743 |
|
744 |
// search and replace all the occurences of a string with another string |
745 |
// or just remove the given string (if replacement is NULL) |
746 |
GStr& GStr::replace(const char *rfrom, const char* rto) { |
747 |
if (length() == 0 || rfrom==NULL || strlen(rfrom)==0) |
748 |
return *this; |
749 |
unsigned int l=strlen(rfrom); |
750 |
unsigned int tl= (rto==NULL)?0:strlen(rto); |
751 |
make_unique(); //edit operation ahead |
752 |
char* p; |
753 |
char* dest; |
754 |
char* newdest=NULL; |
755 |
char* s = my_data->chars; |
756 |
if (tl!=l) { //reallocation |
757 |
if (tl>l) { //possible enlargement |
758 |
GMALLOC(newdest, length()*(tl-l+1)+1); |
759 |
} |
760 |
else {//delete or replace with a shorter string |
761 |
GMALLOC(newdest, length() + 1); |
762 |
} |
763 |
dest=newdest; |
764 |
if (tl==0) {//deletion |
765 |
while ((p=strstr(s,rfrom))!=NULL) { |
766 |
//rfrom found at position p |
767 |
memcpy(dest,s,p-s); |
768 |
dest+=p-s; |
769 |
s+=p-s+l; //s positioned in string after rfrom |
770 |
} |
771 |
//no more occurences, copy the remaining string |
772 |
strcpy(dest, s); |
773 |
} |
774 |
else { //replace with another string |
775 |
while ((p=strstr(s,rfrom))!=NULL) { |
776 |
memcpy(dest,s,p-s); //copy up rto the match |
777 |
dest+=p-s; |
778 |
memcpy(dest,rto,tl); //put the replacement string |
779 |
dest+=tl; |
780 |
s+=p-s+l; |
781 |
} |
782 |
//not found any more, copy rto end of string |
783 |
strcpy(dest, s); |
784 |
} |
785 |
Data* data=new_data(newdest); |
786 |
replace_data(data); |
787 |
GFREE(newdest); |
788 |
} |
789 |
else { //inplace editing: no need rto reallocate |
790 |
while ((p=strstr(s,rfrom))!=NULL) { |
791 |
memcpy(p,rto,l); |
792 |
s+=p-s+l; |
793 |
} |
794 |
} |
795 |
return *this; |
796 |
} |
797 |
|
798 |
|
799 |
|
800 |
GStr& GStr::cut(int idx, int len) { |
801 |
|
802 |
if (len == 0) |
803 |
return *this; |
804 |
make_unique(); //edit operation ahead |
805 |
|
806 |
// A negative idx specifies an idx from the right of the string, |
807 |
// so the left part will be cut out |
808 |
if (idx < 0) |
809 |
idx += length(); |
810 |
|
811 |
// A length of -1 specifies the rest of the string. |
812 |
if (len == -1) |
813 |
len = length() - idx; |
814 |
|
815 |
if (idx<0 || idx>=length() || len<0 || len>length()-idx) |
816 |
invalid_args_error("cut()"); |
817 |
|
818 |
Data *data = new_data(length() - len); |
819 |
if (idx > 0) |
820 |
::memcpy(data->chars, chars(), idx); |
821 |
::strcpy(&data->chars[idx], &chars()[idx+len]); |
822 |
replace_data(data); |
823 |
|
824 |
return *this; |
825 |
} |
826 |
|
827 |
//========================================= |
828 |
|
829 |
GStr& GStr::paste(const GStr& s, int idx, int len) { |
830 |
// A negative idx specifies an idx from the right of the string. |
831 |
if (idx < 0) |
832 |
idx += length(); |
833 |
make_unique(); //edit operation ahead |
834 |
|
835 |
// A length of -1 specifies the rest of the string. |
836 |
if (len == -1) |
837 |
len = length() - idx; |
838 |
|
839 |
if (idx<0 || idx>=length() || len<0 || len>length()-idx) |
840 |
invalid_args_error("replace()"); |
841 |
|
842 |
if (len == s.length() && my_data->ref_count == 1) |
843 |
::memcpy(&chrs()[idx], s.chars(), len); |
844 |
else { |
845 |
Data *data = new_data(length() - len + s.length()); |
846 |
if (idx > 0) |
847 |
::memcpy(data->chars, chars(), idx); |
848 |
if (s.length() > 0) |
849 |
::memcpy(&data->chars[idx], s.chars(), s.length()); |
850 |
::strcpy(&data->chars[idx+s.length()], &chars()[idx+len]); |
851 |
replace_data(data); |
852 |
} |
853 |
|
854 |
return *this; |
855 |
} |
856 |
|
857 |
//========================================= |
858 |
|
859 |
GStr& GStr::paste(const char *s, int idx, int len) { |
860 |
|
861 |
// A negative idx specifies an idx from the right of the string. |
862 |
make_unique(); //edit operation ahead |
863 |
if (idx < 0) |
864 |
idx += length(); |
865 |
|
866 |
// A length of -1 specifies the rest of the string. |
867 |
if (len == -1) |
868 |
len = length() - idx; |
869 |
|
870 |
if (idx<0 || idx>=length() || len<0 || len>length()-idx) |
871 |
invalid_args_error("replace()"); |
872 |
|
873 |
const int s_length = ::strlen(s); |
874 |
|
875 |
if (len == s_length && my_data->ref_count == 1) |
876 |
::memcpy(&chrs()[idx], s, len); |
877 |
else { |
878 |
Data *data = new_data(length() - len + s_length); |
879 |
if (idx > 0) |
880 |
::memcpy(data->chars, chars(), idx); |
881 |
if (s_length > 0) |
882 |
::memcpy(&data->chars[idx], s, s_length); |
883 |
::strcpy(&data->chars[idx+s_length], &chars()[idx+len]); |
884 |
replace_data(data); |
885 |
} |
886 |
|
887 |
return *this; |
888 |
} |
889 |
|
890 |
//========================================= |
891 |
|
892 |
GStr& GStr::insert(const GStr& s, int idx) { |
893 |
make_unique(); //edit operation ahead |
894 |
|
895 |
// A negative idx specifies an idx from the right of the string. |
896 |
if (idx < 0) |
897 |
idx += length(); |
898 |
|
899 |
if (idx < 0 || idx >= length()) |
900 |
invalid_index_error("insert()"); |
901 |
|
902 |
if (s.length() > 0) { |
903 |
Data *data = new_data(length() + s.length()); |
904 |
if (idx > 0) |
905 |
::memcpy(data->chars, chars(), idx); |
906 |
::memcpy(&data->chars[idx], s.chars(), s.length()); |
907 |
::strcpy(&data->chars[idx+s.length()], &chars()[idx]); |
908 |
replace_data(data); |
909 |
} |
910 |
|
911 |
return *this; |
912 |
} |
913 |
|
914 |
//========================================= |
915 |
|
916 |
GStr& GStr::insert(const char *s, int idx) { |
917 |
// A negative idx specifies an idx from the right of the string. |
918 |
make_unique(); //edit operation ahead |
919 |
if (idx < 0) |
920 |
idx += length(); |
921 |
|
922 |
if (idx < 0 || idx >= length()) |
923 |
invalid_index_error("insert()"); |
924 |
|
925 |
const int s_length = ::strlen(s); |
926 |
|
927 |
if (s_length > 0) { |
928 |
Data *data = new_data(length() + s_length); |
929 |
if (idx > 0) |
930 |
::memcpy(data->chars, chars(), idx); |
931 |
::memcpy(&data->chars[idx], s, s_length); |
932 |
::strcpy(&data->chars[idx+s_length], &chars()[idx]); |
933 |
replace_data(data); |
934 |
} |
935 |
|
936 |
return *this; |
937 |
} |
938 |
//========================================= |
939 |
|
940 |
GStr& GStr::append(const char* s) { |
941 |
make_unique(); //edit operation ahead |
942 |
int len=::strlen(s); |
943 |
int newlength=len+my_data->length; |
944 |
if (newlength<=my_data->length) return *this; |
945 |
if (my_data->length==0) { |
946 |
replace_data(len); |
947 |
::memcpy(my_data->chars, s, len); |
948 |
return *this; |
949 |
} |
950 |
//faster solution with realloc |
951 |
GREALLOC(my_data, sizeof(Data)+newlength); |
952 |
::strcpy(&my_data->chars[my_data->length], s); |
953 |
my_data->length=newlength; |
954 |
my_data->chars[newlength]='\0'; |
955 |
return *this; |
956 |
} |
957 |
|
958 |
GStr& GStr::append(const GStr& s) { |
959 |
return append((const char *)s); |
960 |
} |
961 |
|
962 |
|
963 |
GStr& GStr::upper() { |
964 |
make_unique(); //edit operation ahead |
965 |
for (register char *p = chrs(); *p; p++) |
966 |
*p = (char) toupper(*p); |
967 |
|
968 |
return *this; |
969 |
} |
970 |
|
971 |
//========================================= |
972 |
|
973 |
GStr& GStr::lower() { |
974 |
make_unique(); |
975 |
|
976 |
for (register char *p = chrs(); *p; p++) |
977 |
*p = (char) tolower(*p); |
978 |
|
979 |
return *this; |
980 |
} |
981 |
|
982 |
//========================================= |
983 |
|
984 |
int GStr::index(const char *s, int start_index) const { |
985 |
// A negative index specifies an index from the right of the string. |
986 |
if (strlen(s)>(size_t)length()) return -1; |
987 |
if (start_index < 0) |
988 |
start_index += length(); |
989 |
|
990 |
if (start_index < 0 || start_index >= length()) |
991 |
invalid_index_error("index()"); |
992 |
const char* idx = strstr(&chars()[start_index], s); |
993 |
if (!idx) |
994 |
return -1; |
995 |
else |
996 |
return idx - chars(); |
997 |
} |
998 |
|
999 |
//========================================= |
1000 |
|
1001 |
int GStr::index(char c, int start_index) const { |
1002 |
// A negative index specifies an index from the right of the string. |
1003 |
if (length()==0) return -1; |
1004 |
if (start_index < 0) |
1005 |
start_index += length(); |
1006 |
|
1007 |
if (start_index < 0 || start_index >= length()) |
1008 |
invalid_index_error("index()"); |
1009 |
|
1010 |
|
1011 |
if (c == '\0') |
1012 |
return -1; |
1013 |
const char *idx=(char *) ::memchr(&chars()[start_index], c, |
1014 |
length()-start_index); |
1015 |
if (idx==NULL) |
1016 |
return -1; |
1017 |
else |
1018 |
return idx - chars(); |
1019 |
} |
1020 |
|
1021 |
int GStr::rindex(char c, int end_index) const { |
1022 |
if (c == 0 || length()==0 || end_index>=length()) return -1; |
1023 |
if (end_index<0) end_index=my_data->length-1; |
1024 |
for (int i=end_index;i>=0;i--) { |
1025 |
if (my_data->chars[i]==c) return i; |
1026 |
} |
1027 |
return -1; |
1028 |
} |
1029 |
|
1030 |
int GStr::rindex(const char* str, int end_index) const { |
1031 |
if (str==NULL || *str == '\0' || length()==0 || end_index>=length()) |
1032 |
return -1; |
1033 |
int slen=strlen(str); |
1034 |
if (end_index<0) end_index=my_data->length-1; |
1035 |
//end_index is the index of the right-side boundary |
1036 |
//the scanning starts at the end |
1037 |
if (end_index>=0 && end_index<slen-1) return -1; |
1038 |
for (int i=end_index-slen+1;i>=0;i--) { |
1039 |
if (memcmp((void*)(my_data->chars+i),(void*)str, slen)==0) |
1040 |
return i; |
1041 |
} |
1042 |
return -1; |
1043 |
} |
1044 |
|
1045 |
GStr GStr::split(const char* delim) { |
1046 |
/* splits "this" in two parts, at the first (left) |
1047 |
encounter of delim: |
1048 |
1st would stay in "this", |
1049 |
2nd part will be returned |
1050 |
as a new string! |
1051 |
*/ |
1052 |
GStr result; |
1053 |
int i=index(delim); |
1054 |
if (i>=0){ |
1055 |
result=substr(i+strlen(delim)); |
1056 |
cut(i); |
1057 |
return result; |
1058 |
} |
1059 |
return result; |
1060 |
} |
1061 |
|
1062 |
GStr GStr::split(char c) { |
1063 |
/* splits "this" in two parts, at the first (left) |
1064 |
encounter of delim: |
1065 |
1st would stay in "this", |
1066 |
2nd part will be returned |
1067 |
as a new string! |
1068 |
*/ |
1069 |
GStr result; |
1070 |
int i=index(c); |
1071 |
if (i>=0){ |
1072 |
result=substr(i+1); |
1073 |
cut(i); |
1074 |
return result; |
1075 |
} |
1076 |
return result; |
1077 |
} |
1078 |
|
1079 |
GStr GStr::splitr(const char* delim) { |
1080 |
GStr result; |
1081 |
int i=rindex(delim); |
1082 |
if (i>=0){ |
1083 |
result=substr(i+strlen(delim)); |
1084 |
cut(i); |
1085 |
return result; |
1086 |
} |
1087 |
return result; |
1088 |
} |
1089 |
|
1090 |
GStr GStr::splitr(char c) { |
1091 |
GStr result; |
1092 |
int i=rindex(c); |
1093 |
if (i>=0){ |
1094 |
result=substr(i+1); |
1095 |
cut(i); |
1096 |
return result; |
1097 |
} |
1098 |
return result; |
1099 |
} |
1100 |
|
1101 |
|
1102 |
void GStr::startTokenize(const char* delimiter, enTokenizeMode tokenizemode) { |
1103 |
GFREE(fTokenDelimiter); |
1104 |
if (delimiter) { |
1105 |
GMALLOC(fTokenDelimiter,strlen(delimiter)+1); |
1106 |
strcpy(fTokenDelimiter, delimiter); |
1107 |
} |
1108 |
fLastTokenStart=0; |
1109 |
fTokenizeMode=tokenizemode; |
1110 |
} |
1111 |
|
1112 |
bool GStr::nextToken(GStr& token) { |
1113 |
if (fTokenDelimiter==NULL) { |
1114 |
GError("GStr:: no token delimiter; use StartTokenize first\n"); |
1115 |
} |
1116 |
if (fLastTokenStart>=length()) {//no more |
1117 |
GFREE(fTokenDelimiter); |
1118 |
fLastTokenStart=0; |
1119 |
return false; |
1120 |
} |
1121 |
int dlen=strlen(fTokenDelimiter); |
1122 |
char* delpos=NULL; //delimiter position |
1123 |
int tlen=0; |
1124 |
if (fTokenizeMode==tkFullString) { //exact string as a delimiter |
1125 |
delpos=(char*)strstr(chars()+fLastTokenStart,fTokenDelimiter); |
1126 |
if (delpos==NULL) delpos=(char*)(chars()+length()); |
1127 |
//empty records may be returned |
1128 |
if (chars()+fLastTokenStart == delpos) { //empty token |
1129 |
fLastTokenStart=(delpos-chars())+dlen; |
1130 |
token=""; |
1131 |
return true; |
1132 |
} |
1133 |
else { |
1134 |
tlen=delpos-(chars()+fLastTokenStart); |
1135 |
token.replace_data(tlen); |
1136 |
::memcpy(token.chrs(), &chars()[fLastTokenStart], tlen); |
1137 |
fLastTokenStart=(delpos-chars())+dlen; |
1138 |
return true; |
1139 |
} |
1140 |
} |
1141 |
else { //tkCharSet - any character is a delimiter |
1142 |
//empty records are never returned ! |
1143 |
if (fLastTokenStart==0) {//skip any starting delimiters |
1144 |
delpos=(char*)chars(); |
1145 |
while (*delpos!='\0' && strchr(fTokenDelimiter, *delpos)!=NULL) |
1146 |
delpos++; |
1147 |
if (*delpos!='\0') |
1148 |
fLastTokenStart = delpos-chars(); |
1149 |
else { //only delimiters here,no tokens |
1150 |
GFREE(fTokenDelimiter); |
1151 |
fLastTokenStart=0; |
1152 |
return false; |
1153 |
} |
1154 |
} |
1155 |
//now fLastTokenStart is on a non-delimiter char |
1156 |
//GMessage("String at fLastTokenStart=%d is %s\n", fLastTokenStart, delpos); |
1157 |
char* token_end=NULL; |
1158 |
delpos=(char*)strpbrk(chars()+fLastTokenStart,fTokenDelimiter); |
1159 |
if (delpos==NULL) delpos=(char*)(chars()+length()); |
1160 |
token_end=delpos-1; |
1161 |
while (*delpos!='\0' && strchr(fTokenDelimiter, *delpos)!=NULL) |
1162 |
delpos++; //skip any other delimiters in the set! |
1163 |
//now we know that delpos is on the beginning of next token |
1164 |
tlen=(token_end-chars())-fLastTokenStart+1; |
1165 |
if (tlen==0) { |
1166 |
GFREE(fTokenDelimiter); |
1167 |
fLastTokenStart=0; |
1168 |
return false; |
1169 |
} |
1170 |
token.replace_data(tlen); |
1171 |
::memcpy(token.chrs(), &chars()[fLastTokenStart], tlen); |
1172 |
fLastTokenStart=delpos-chars(); |
1173 |
return true; |
1174 |
} |
1175 |
//return true; |
1176 |
} |
1177 |
|
1178 |
size_t GStr::read(FILE* stream, const char* delimiter, size_t bufsize) { |
1179 |
//read up to (and including) the given delimiter string |
1180 |
if (readbuf==NULL) { |
1181 |
GMALLOC(readbuf, bufsize); |
1182 |
readbufsize=bufsize; |
1183 |
} |
1184 |
else if (bufsize!=readbufsize) { |
1185 |
GFREE(readbuf); |
1186 |
if (bufsize>0) { |
1187 |
GMALLOC(readbuf, bufsize); |
1188 |
} |
1189 |
readbufsize=bufsize; |
1190 |
} |
1191 |
if (bufsize==0) { |
1192 |
replace_data(0); |
1193 |
return 0; //clear the string and free the buffer |
1194 |
} |
1195 |
size_t numread; |
1196 |
size_t acc_len=0; //accumulated length |
1197 |
int seplen=strlen(delimiter); |
1198 |
void* p=NULL; |
1199 |
Data *data = new_data(0); |
1200 |
do { |
1201 |
numread=fread(readbuf, 1, bufsize, stream); |
1202 |
if (numread) { |
1203 |
p=Gmemscan(readbuf, bufsize, (void*) delimiter, seplen); |
1204 |
if (p!=NULL) {//found the delimiter |
1205 |
//position the stream after it |
1206 |
int l = (char*)p-(char*)readbuf; |
1207 |
fseek(stream, l+seplen-numread, SEEK_CUR); |
1208 |
numread=l+seplen; |
1209 |
} |
1210 |
else {//not found, go back if not eof |
1211 |
if (numread==bufsize) { |
1212 |
fseek(stream, -seplen, SEEK_CUR); //check if this works! |
1213 |
numread-=seplen; |
1214 |
} |
1215 |
} |
1216 |
if (data==&null_data) { |
1217 |
data=new_data(numread); |
1218 |
::memcpy(data->chars, readbuf, numread); |
1219 |
acc_len+=numread; |
1220 |
} |
1221 |
else { |
1222 |
GREALLOC(data, sizeof(Data)+acc_len+numread); |
1223 |
memcpy(&data->chars[acc_len], readbuf, numread); |
1224 |
acc_len+=numread; |
1225 |
data->length=acc_len; |
1226 |
data->chars[acc_len]='\0'; |
1227 |
} |
1228 |
} //if something read |
1229 |
} while (p==NULL && numread!=0); |
1230 |
replace_data(data); |
1231 |
return acc_len; |
1232 |
} |
1233 |
|
1234 |
|
1235 |
int GStr::asInt(int base /*=10 */) { |
1236 |
return strtol(text(), NULL, base); |
1237 |
} |
1238 |
|
1239 |
bool GStr::asInt(int& r, int base) { |
1240 |
errno=0; |
1241 |
char*endptr; |
1242 |
long val=strtol(text(), &endptr, base); |
1243 |
if (errno!=0) return false; |
1244 |
if (endptr == text()) return false; |
1245 |
/* If we got here, strtol() successfully parsed a number */ |
1246 |
r=val; |
1247 |
return true; |
1248 |
} |
1249 |
|
1250 |
double GStr::asReal() { |
1251 |
return strtod(text(), NULL); |
1252 |
} |
1253 |
|
1254 |
bool GStr::asReal(double& r) { |
1255 |
errno=0; |
1256 |
char* endptr; |
1257 |
double val=strtod(text(), &endptr); |
1258 |
if (errno!=0) return false; |
1259 |
if (endptr == text()) return false; //no digits to parse |
1260 |
r=val; |
1261 |
return true; |
1262 |
} |
1263 |
|
1264 |
|
1265 |
int GStr::peelInt() const { |
1266 |
if (is_empty()) return 0; |
1267 |
char buf[24]; |
1268 |
bool started=false; |
1269 |
int j=0; |
1270 |
int i; |
1271 |
for (i=0;i<length();i++) { |
1272 |
if (started) { |
1273 |
if (isdigit(my_data->chars[i])) j++; //set coord |
1274 |
else break; //finished |
1275 |
} |
1276 |
else |
1277 |
if (isdigit(my_data->chars[i])) { |
1278 |
j++; started=true; |
1279 |
} |
1280 |
} |
1281 |
if (j>0) { |
1282 |
strncpy(buf, &my_data->chars[i-j], j); |
1283 |
buf[j]='\0'; |
1284 |
return strtol(buf, NULL, 10); |
1285 |
} |
1286 |
return 0; |
1287 |
} |
1288 |
|
1289 |
int GStr::peelIntR() const { |
1290 |
if (is_empty()) return 0; |
1291 |
char buf[24]; |
1292 |
bool started=false; |
1293 |
int j=0; |
1294 |
int i; |
1295 |
for (i=length()-1;i>=0;i--) { |
1296 |
if (started) { |
1297 |
if (isdigit(my_data->chars[i])) j++; //set length |
1298 |
else break; //finished |
1299 |
} |
1300 |
else |
1301 |
if (isdigit(my_data->chars[i])) { |
1302 |
j++; started=true; |
1303 |
} |
1304 |
} |
1305 |
if (j>0) { |
1306 |
strncpy(buf, &my_data->chars[i+1], j); |
1307 |
buf[j]='\0'; |
1308 |
return strtol(buf, NULL, 10); |
1309 |
} |
1310 |
return 0; |
1311 |
} |
1312 |
|
1313 |
GStr GStr::to(char c) { //return the first part up to first occurence of c |
1314 |
int i=index(c); |
1315 |
if (i>=0) return substr(0,i); |
1316 |
else return (*this); |
1317 |
} |
1318 |
//or whole string if c not found |
1319 |
GStr GStr::from(char c) { //same as to, but starting from the right side |
1320 |
int i=rindex(c); |
1321 |
if (i>=0) return substr(i+1); |
1322 |
else return (*this); |
1323 |
} |
1324 |
|
1325 |
int GStr::count(char c){ |
1326 |
//return the number of occurences of char c within the string |
1327 |
int result=0; |
1328 |
for (int i=0;i<length();i++) |
1329 |
if (my_data->chars[i]==c) result++; |
1330 |
return result; |
1331 |
} |
1332 |
|
1333 |
//========================================= |
1334 |
|
1335 |
void GStr::invalid_args_error(const char *fname) { |
1336 |
GError("GStr:: %s - invalid arguments\n", fname); |
1337 |
} |
1338 |
|
1339 |
//**************************************************************************** |
1340 |
|
1341 |
void GStr::invalid_index_error(const char *fname) { |
1342 |
GError("GStr:: %s - invalid index\n", fname); |
1343 |
} |
1344 |
//**************************************************************************** |