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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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fLastTokenStart=0; |
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readbuf=NULL; |
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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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fLastTokenStart=0; |
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readbuf=NULL; |
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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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fLastTokenStart=0; |
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readbuf=NULL; |
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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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fLastTokenStart=0; |
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readbuf=NULL; |
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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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fLastTokenStart=0; |
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readbuf=NULL; |
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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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fLastTokenStart=0; |
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readbuf=NULL; |
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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); |
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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; |
380 |
va_start(arguments,fmt); |
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//+1K buffer, should be enough for common expressions |
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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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} |
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|
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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++) ; |
393 |
if (istart==length()) { |
394 |
make_unique(); //edit operation ahead |
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replace_data(0); //string was entirely trimmed |
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return *this; |
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} |
398 |
for (iend=length()-1; iend>istart && chars()[iend]==c;iend--) ; |
399 |
int newlen=iend-istart+1; |
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if (newlen==length()) //nothing to trim |
401 |
return *this; |
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make_unique(); //edit operation ahead |
403 |
Data *data = new_data(newlen); |
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::memcpy(data->chars, &chars()[istart], newlen); |
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replace_data(data); |
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return *this; |
407 |
} |
408 |
|
409 |
GStr& GStr::trim(const char* c) { |
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register int istart; |
411 |
register int iend; |
412 |
for (istart=0; istart<length() && strchr(c, chars()[istart])!=NULL ;istart++) ; |
413 |
if (istart==length()) { |
414 |
replace_data(0); //string was entirely trimmed |
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return *this; |
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} |
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for (iend=length()-1; iend>istart && strchr(c, chars()[iend])!=NULL;iend--) ; |
418 |
int newlen=iend-istart+1; |
419 |
if (newlen==length()) //nothing to trim |
420 |
return *this; |
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make_unique(); //edit operation ahead |
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Data *data = new_data(newlen); |
423 |
::memcpy(data->chars, &chars()[istart], newlen); |
424 |
replace_data(data); |
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return *this; |
426 |
} |
427 |
|
428 |
GStr& GStr::trimR(char c) { |
429 |
//only trim the right end |
430 |
//register int istart; |
431 |
register int iend; |
432 |
for (iend=length()-1; iend>=0 && chars()[iend]==c;iend--) ; |
433 |
if (iend==-1) { |
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replace_data(0); //string was entirely trimmed |
435 |
return *this; |
436 |
} |
437 |
int newlen=iend+1; |
438 |
if (newlen==length()) //nothing to trim |
439 |
return *this; |
440 |
make_unique(); //edit operation ahead |
441 |
|
442 |
Data *data = new_data(newlen); |
443 |
::memcpy(data->chars, chars(), newlen); |
444 |
replace_data(data); |
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return *this; |
446 |
} |
447 |
|
448 |
GStr& GStr::trimR(const char* c) { |
449 |
register int iend; |
450 |
for (iend=length()-1; iend>=0 && strchr(c,chars()[iend])!=NULL;iend--) ; |
451 |
if (iend==-1) { |
452 |
replace_data(0); //string was entirely trimmed |
453 |
return *this; |
454 |
} |
455 |
int newlen=iend+1; |
456 |
if (newlen==length()) //nothing to trim |
457 |
return *this; |
458 |
make_unique(); //edit operation ahead |
459 |
Data *data = new_data(newlen); |
460 |
::memcpy(data->chars, chars(), newlen); |
461 |
replace_data(data); |
462 |
return *this; |
463 |
} |
464 |
|
465 |
|
466 |
GStr& GStr::chomp(const char* cstr) { |
467 |
register int iend; |
468 |
if (cstr==NULL || *cstr==0) return *this; |
469 |
//check if this ends with cstr |
470 |
int cend=strlen(cstr)-1; |
471 |
iend=my_data->length-1; |
472 |
while (iend>=0 && cend>=0) { |
473 |
if (my_data->chars[iend]!=cstr[cend]) return *this; |
474 |
iend--; |
475 |
cend--; |
476 |
} |
477 |
if (iend==-1) { |
478 |
replace_data(0); //string will be entirely trimmed |
479 |
return *this; |
480 |
} |
481 |
int newlen=iend+1; |
482 |
make_unique(); //edit operation ahead |
483 |
Data *data = new_data(newlen); |
484 |
::memcpy(data->chars, chars(), newlen); |
485 |
replace_data(data); |
486 |
return *this; |
487 |
} |
488 |
|
489 |
GStr& GStr::trimL(char c) { |
490 |
register int istart; |
491 |
for (istart=0; istart<length() && chars()[istart]==c;istart++) ; |
492 |
if (istart==length()) { |
493 |
replace_data(0); //string was entirely trimmed |
494 |
return *this; |
495 |
} |
496 |
int newlen=length()-istart; |
497 |
if (newlen==length()) //nothing to trim |
498 |
return *this; |
499 |
make_unique(); //edit operation ahead |
500 |
Data *data = new_data(newlen); |
501 |
::memcpy(data->chars, &chars()[istart], newlen); |
502 |
replace_data(data); |
503 |
return *this; |
504 |
} |
505 |
|
506 |
GStr& GStr::trimL(const char* c) { |
507 |
register int istart; |
508 |
for (istart=0; istart<length() && strchr(c,chars()[istart])!=NULL;istart++) ; |
509 |
if (istart==length()) { |
510 |
replace_data(0); //string was entirely trimmed |
511 |
return *this; |
512 |
} |
513 |
int newlen=length()-istart; |
514 |
if (newlen==length()) //nothing to trim |
515 |
return *this; |
516 |
make_unique(); //edit operation ahead |
517 |
|
518 |
Data *data = new_data(newlen); |
519 |
::memcpy(data->chars, &chars()[istart], newlen); |
520 |
replace_data(data); |
521 |
return *this; |
522 |
} |
523 |
|
524 |
GStr& GStr::padR(int len, char c) { |
525 |
//actually means align right in len |
526 |
if (length()>=len) return *this; //no room for padding |
527 |
make_unique(); //edit operation ahead |
528 |
Data *data = new_data(len); |
529 |
::memset(data->chars,c,len-length()); |
530 |
::memcpy(&data->chars[len-length()], chars(), length()); |
531 |
replace_data(data); |
532 |
return *this; |
533 |
} |
534 |
|
535 |
GStr& GStr::padL(int len, char c) { //align left the string |
536 |
if (length()>=len) return *this; //no room for padding |
537 |
make_unique(); //edit operation ahead |
538 |
Data *data = new_data(len); |
539 |
::memcpy(data->chars, chars(), length()); |
540 |
::memset(&data->chars[length()],c,len-length()); |
541 |
replace_data(data); |
542 |
return *this; |
543 |
} |
544 |
|
545 |
GStr& GStr::padC(int len, char c) { |
546 |
if (length()>=len) return *this; //no room for padding |
547 |
make_unique(); //edit operation ahead |
548 |
int istart=(len-length())/2; |
549 |
Data *data = new_data(len); |
550 |
if (istart>0) |
551 |
::memset(data->chars, c, istart); |
552 |
::memcpy(&data->chars[istart], chars(), length()); |
553 |
int iend=istart+length(); |
554 |
if (iend<len) |
555 |
::memset(&data->chars[iend],c,len-iend); |
556 |
replace_data(data); |
557 |
return *this; |
558 |
} |
559 |
|
560 |
GStr operator+(const char *s1, const GStr& s2) { |
561 |
const int s1_length = ::strlen(s1); |
562 |
|
563 |
if (s1_length == 0) |
564 |
return s2; |
565 |
else { |
566 |
GStr newstring; |
567 |
newstring.replace_data(s1_length + s2.length()); |
568 |
::memcpy(newstring.chrs(), s1, s1_length); |
569 |
::memcpy(&(newstring.chrs())[s1_length], s2.chars(), s2.length()); |
570 |
return newstring; |
571 |
} |
572 |
} |
573 |
|
574 |
//========================================= |
575 |
|
576 |
GStr GStr::operator+(const GStr& s) const { |
577 |
if (length() == 0) |
578 |
return s; |
579 |
else if (s.length() == 0) |
580 |
return *this; |
581 |
else { |
582 |
GStr newstring; |
583 |
newstring.replace_data(length() + s.length()); |
584 |
::memcpy(newstring.chrs(), chars(), length()); |
585 |
::memcpy(&(newstring.chrs())[length()], s.chars(), s.length()); |
586 |
return newstring; |
587 |
} |
588 |
} |
589 |
|
590 |
//========================================= |
591 |
|
592 |
GStr GStr::operator+(const char *s) const { |
593 |
|
594 |
const int s_length = ::strlen(s); |
595 |
|
596 |
if (s_length == 0) |
597 |
return *this; |
598 |
else { |
599 |
GStr newstring; |
600 |
newstring.replace_data(length() + s_length); |
601 |
::memcpy(newstring.chrs(), chars(), length()); |
602 |
::memcpy(&(newstring.chrs())[length()], s, s_length); |
603 |
return newstring; |
604 |
} |
605 |
} |
606 |
|
607 |
GStr GStr::operator+(const int i) const { |
608 |
char buf[20]; |
609 |
sprintf(buf, "%d", i); |
610 |
const int s_length = ::strlen(buf); |
611 |
GStr newstring; |
612 |
newstring.replace_data(length() + s_length); |
613 |
::memcpy(newstring.chrs(), chars(), length()); |
614 |
::memcpy(&(newstring.chrs())[length()], buf, s_length); |
615 |
return newstring; |
616 |
} |
617 |
|
618 |
GStr GStr::operator+(const char c) const { |
619 |
char buf[4]; |
620 |
sprintf(buf, "%c", c); |
621 |
const int s_length = ::strlen(buf); |
622 |
GStr newstring; |
623 |
newstring.replace_data(length() + s_length); |
624 |
::memcpy(newstring.chrs(), chars(), length()); |
625 |
::memcpy(&(newstring.chrs())[length()], buf, s_length); |
626 |
return newstring; |
627 |
} |
628 |
|
629 |
GStr GStr::operator+(const double f) const { |
630 |
char buf[30]; |
631 |
sprintf(buf, "%f", f); |
632 |
const int s_length = ::strlen(buf); |
633 |
GStr newstring; |
634 |
newstring.replace_data(length() + s_length); |
635 |
::memcpy(newstring.chrs(), chars(), length()); |
636 |
::memcpy(&(newstring.chrs())[length()], buf, s_length); |
637 |
return newstring; |
638 |
} |
639 |
|
640 |
|
641 |
//========================================= |
642 |
|
643 |
bool GStr::is_space() const { |
644 |
|
645 |
if (my_data == &null_data) |
646 |
return false; |
647 |
|
648 |
for (register const char *p = chars(); *p; p++) |
649 |
if (!isspace(*p)) |
650 |
return false; |
651 |
|
652 |
return true; |
653 |
} |
654 |
|
655 |
//========================================= |
656 |
|
657 |
GStr GStr::substr(int idx, int len) const { |
658 |
// A negative idx specifies an idx from the right of the string. |
659 |
if (idx < 0) |
660 |
idx += length(); |
661 |
|
662 |
// A length of -1 specifies the rest of the string. |
663 |
if (len < 0 || len>length()-idx) |
664 |
len = length() - idx; |
665 |
|
666 |
if (idx<0 || idx>=length() || len<0 ) |
667 |
invalid_args_error("substr()"); |
668 |
|
669 |
GStr newstring; |
670 |
newstring.replace_data(len); |
671 |
::memcpy(newstring.chrs(), &chars()[idx], len); |
672 |
return newstring; |
673 |
} |
674 |
|
675 |
GStr& GStr::reverse() { |
676 |
make_unique(); |
677 |
int l=0; |
678 |
int r=my_data->length-1; |
679 |
char c; |
680 |
while (l<r) { |
681 |
c=my_data->chars[l]; |
682 |
my_data->chars[l]=my_data->chars[r]; |
683 |
my_data->chars[r]=c; |
684 |
l++;r--; |
685 |
} |
686 |
return *this; |
687 |
} |
688 |
|
689 |
|
690 |
//transform: any character from 'from' is replaced with a coresponding |
691 |
//char from 'to' |
692 |
|
693 |
GStr& GStr::tr(const char *rfrom, const char* rto) { |
694 |
if (length() == 0 || rfrom==NULL || strlen(rfrom)==0) |
695 |
return *this; |
696 |
unsigned int l=strlen(rfrom); |
697 |
if (rto!=NULL && strlen(rto)!=l) |
698 |
invalid_args_error("tr()"); |
699 |
make_unique(); //edit operation ahead |
700 |
Data *data = new_data(length()); |
701 |
|
702 |
if (rto==NULL) { //deletion case |
703 |
char* s = my_data->chars; |
704 |
char* p; |
705 |
char* dest = data->chars; |
706 |
do { |
707 |
if ((p=strpbrk(s,rfrom))!=NULL) { |
708 |
memcpy(dest,s,p-s); |
709 |
dest+=p-s; |
710 |
s=p+1; |
711 |
} |
712 |
else { |
713 |
strcpy(dest, s); |
714 |
dest+=strlen(s); |
715 |
} |
716 |
} while (p!=NULL); |
717 |
(*dest)='\0'; |
718 |
} |
719 |
else { //char substitution case - easier! |
720 |
const char* p; |
721 |
for (int i=0; i<length(); i++) { |
722 |
if ((p=strchr(rfrom, my_data->chars[i]))!=NULL) |
723 |
my_data->chars[i]=rto[p-rfrom]; |
724 |
} |
725 |
} |
726 |
data->length=strlen(data->chars); |
727 |
replace_data(data); |
728 |
return *this; |
729 |
} |
730 |
|
731 |
|
732 |
// search and replace all the occurences of a string with another string |
733 |
// or just remove the given string (if replacement is NULL) |
734 |
GStr& GStr::replace(const char *rfrom, const char* rto) { |
735 |
if (length() == 0 || rfrom==NULL || strlen(rfrom)==0) |
736 |
return *this; |
737 |
unsigned int l=strlen(rfrom); |
738 |
unsigned int tl= (rto==NULL)?0:strlen(rto); |
739 |
make_unique(); //edit operation ahead |
740 |
char* p; |
741 |
char* dest; |
742 |
char* newdest=NULL; |
743 |
char* s = my_data->chars; |
744 |
if (tl!=l) { //reallocation |
745 |
if (tl>l) { //possible enlargement |
746 |
GMALLOC(newdest, length()*(tl-l+1)+1); |
747 |
} |
748 |
else {//delete or replace with a shorter string |
749 |
GMALLOC(newdest, length() + 1); |
750 |
} |
751 |
dest=newdest; |
752 |
if (tl==0) {//deletion |
753 |
while ((p=strstr(s,rfrom))!=NULL) { |
754 |
//rfrom found at position p |
755 |
memcpy(dest,s,p-s); |
756 |
dest+=p-s; |
757 |
s+=p-s+l; //s positioned in string after rfrom |
758 |
} |
759 |
//no more occurences, copy the remaining string |
760 |
strcpy(dest, s); |
761 |
} |
762 |
else { //replace with another string |
763 |
while ((p=strstr(s,rfrom))!=NULL) { |
764 |
memcpy(dest,s,p-s); //copy up rto the match |
765 |
dest+=p-s; |
766 |
memcpy(dest,rto,tl); //put the replacement string |
767 |
dest+=tl; |
768 |
s+=p-s+l; |
769 |
} |
770 |
//not found any more, copy rto end of string |
771 |
strcpy(dest, s); |
772 |
} |
773 |
Data* data=new_data(newdest); |
774 |
replace_data(data); |
775 |
GFREE(newdest); |
776 |
} |
777 |
else { //inplace editing: no need rto reallocate |
778 |
while ((p=strstr(s,rfrom))!=NULL) { |
779 |
memcpy(p,rto,l); |
780 |
s+=p-s+l; |
781 |
} |
782 |
} |
783 |
return *this; |
784 |
} |
785 |
|
786 |
|
787 |
|
788 |
GStr& GStr::cut(int idx, int len) { |
789 |
|
790 |
if (len == 0) |
791 |
return *this; |
792 |
make_unique(); //edit operation ahead |
793 |
|
794 |
// A negative idx specifies an idx from the right of the string, |
795 |
// so the left part will be cut out |
796 |
if (idx < 0) |
797 |
idx += length(); |
798 |
|
799 |
// A length of -1 specifies the rest of the string. |
800 |
if (len == -1) |
801 |
len = length() - idx; |
802 |
|
803 |
if (idx<0 || idx>=length() || len<0 || len>length()-idx) |
804 |
invalid_args_error("cut()"); |
805 |
|
806 |
Data *data = new_data(length() - len); |
807 |
if (idx > 0) |
808 |
::memcpy(data->chars, chars(), idx); |
809 |
::strcpy(&data->chars[idx], &chars()[idx+len]); |
810 |
replace_data(data); |
811 |
|
812 |
return *this; |
813 |
} |
814 |
|
815 |
//========================================= |
816 |
|
817 |
GStr& GStr::paste(const GStr& s, int idx, int len) { |
818 |
// A negative idx specifies an idx from the right of the string. |
819 |
if (idx < 0) |
820 |
idx += length(); |
821 |
make_unique(); //edit operation ahead |
822 |
|
823 |
// A length of -1 specifies the rest of the string. |
824 |
if (len == -1) |
825 |
len = length() - idx; |
826 |
|
827 |
if (idx<0 || idx>=length() || len<0 || len>length()-idx) |
828 |
invalid_args_error("replace()"); |
829 |
|
830 |
if (len == s.length() && my_data->ref_count == 1) |
831 |
::memcpy(&chrs()[idx], s.chars(), len); |
832 |
else { |
833 |
Data *data = new_data(length() - len + s.length()); |
834 |
if (idx > 0) |
835 |
::memcpy(data->chars, chars(), idx); |
836 |
if (s.length() > 0) |
837 |
::memcpy(&data->chars[idx], s.chars(), s.length()); |
838 |
::strcpy(&data->chars[idx+s.length()], &chars()[idx+len]); |
839 |
replace_data(data); |
840 |
} |
841 |
|
842 |
return *this; |
843 |
} |
844 |
|
845 |
//========================================= |
846 |
|
847 |
GStr& GStr::paste(const char *s, int idx, int len) { |
848 |
|
849 |
// A negative idx specifies an idx from the right of the string. |
850 |
make_unique(); //edit operation ahead |
851 |
if (idx < 0) |
852 |
idx += length(); |
853 |
|
854 |
// A length of -1 specifies the rest of the string. |
855 |
if (len == -1) |
856 |
len = length() - idx; |
857 |
|
858 |
if (idx<0 || idx>=length() || len<0 || len>length()-idx) |
859 |
invalid_args_error("replace()"); |
860 |
|
861 |
const int s_length = ::strlen(s); |
862 |
|
863 |
if (len == s_length && my_data->ref_count == 1) |
864 |
::memcpy(&chrs()[idx], s, len); |
865 |
else { |
866 |
Data *data = new_data(length() - len + s_length); |
867 |
if (idx > 0) |
868 |
::memcpy(data->chars, chars(), idx); |
869 |
if (s_length > 0) |
870 |
::memcpy(&data->chars[idx], s, s_length); |
871 |
::strcpy(&data->chars[idx+s_length], &chars()[idx+len]); |
872 |
replace_data(data); |
873 |
} |
874 |
|
875 |
return *this; |
876 |
} |
877 |
|
878 |
//========================================= |
879 |
|
880 |
GStr& GStr::insert(const GStr& s, int idx) { |
881 |
make_unique(); //edit operation ahead |
882 |
|
883 |
// A negative idx specifies an idx from the right of the string. |
884 |
if (idx < 0) |
885 |
idx += length(); |
886 |
|
887 |
if (idx < 0 || idx >= length()) |
888 |
invalid_index_error("insert()"); |
889 |
|
890 |
if (s.length() > 0) { |
891 |
Data *data = new_data(length() + s.length()); |
892 |
if (idx > 0) |
893 |
::memcpy(data->chars, chars(), idx); |
894 |
::memcpy(&data->chars[idx], s.chars(), s.length()); |
895 |
::strcpy(&data->chars[idx+s.length()], &chars()[idx]); |
896 |
replace_data(data); |
897 |
} |
898 |
|
899 |
return *this; |
900 |
} |
901 |
|
902 |
//========================================= |
903 |
|
904 |
GStr& GStr::insert(const char *s, int idx) { |
905 |
// A negative idx specifies an idx from the right of the string. |
906 |
make_unique(); //edit operation ahead |
907 |
if (idx < 0) |
908 |
idx += length(); |
909 |
|
910 |
if (idx < 0 || idx >= length()) |
911 |
invalid_index_error("insert()"); |
912 |
|
913 |
const int s_length = ::strlen(s); |
914 |
|
915 |
if (s_length > 0) { |
916 |
Data *data = new_data(length() + s_length); |
917 |
if (idx > 0) |
918 |
::memcpy(data->chars, chars(), idx); |
919 |
::memcpy(&data->chars[idx], s, s_length); |
920 |
::strcpy(&data->chars[idx+s_length], &chars()[idx]); |
921 |
replace_data(data); |
922 |
} |
923 |
|
924 |
return *this; |
925 |
} |
926 |
//========================================= |
927 |
|
928 |
GStr& GStr::append(const char* s) { |
929 |
make_unique(); //edit operation ahead |
930 |
int len=::strlen(s); |
931 |
int newlength=len+my_data->length; |
932 |
if (newlength<=my_data->length) return *this; |
933 |
if (my_data->length==0) { |
934 |
replace_data(len); |
935 |
::memcpy(my_data->chars, s, len); |
936 |
return *this; |
937 |
} |
938 |
//faster solution with realloc |
939 |
GREALLOC(my_data, sizeof(Data)+newlength); |
940 |
::strcpy(&my_data->chars[my_data->length], s); |
941 |
my_data->length=newlength; |
942 |
my_data->chars[newlength]='\0'; |
943 |
return *this; |
944 |
} |
945 |
|
946 |
GStr& GStr::append(const GStr& s) { |
947 |
return append((const char *)s); |
948 |
} |
949 |
|
950 |
|
951 |
GStr& GStr::upper() { |
952 |
make_unique(); //edit operation ahead |
953 |
for (register char *p = chrs(); *p; p++) |
954 |
*p = (char) toupper(*p); |
955 |
|
956 |
return *this; |
957 |
} |
958 |
|
959 |
//========================================= |
960 |
|
961 |
GStr& GStr::lower() { |
962 |
make_unique(); |
963 |
|
964 |
for (register char *p = chrs(); *p; p++) |
965 |
*p = (char) tolower(*p); |
966 |
|
967 |
return *this; |
968 |
} |
969 |
|
970 |
//========================================= |
971 |
|
972 |
int GStr::index(const char *s, int start_index) const { |
973 |
// A negative index specifies an index from the right of the string. |
974 |
if (strlen(s)>(size_t)length()) return -1; |
975 |
if (start_index < 0) |
976 |
start_index += length(); |
977 |
|
978 |
if (start_index < 0 || start_index >= length()) |
979 |
invalid_index_error("index()"); |
980 |
const char* idx = strstr(&chars()[start_index], s); |
981 |
if (!idx) |
982 |
return -1; |
983 |
else |
984 |
return idx - chars(); |
985 |
} |
986 |
|
987 |
//========================================= |
988 |
|
989 |
int GStr::index(char c, int start_index) const { |
990 |
// A negative index specifies an index from the right of the string. |
991 |
if (length()==0) return -1; |
992 |
if (start_index < 0) |
993 |
start_index += length(); |
994 |
|
995 |
if (start_index < 0 || start_index >= length()) |
996 |
invalid_index_error("index()"); |
997 |
|
998 |
|
999 |
if (c == '\0') |
1000 |
return -1; |
1001 |
const char *idx=(char *) ::memchr(&chars()[start_index], c, |
1002 |
length()-start_index); |
1003 |
if (idx==NULL) |
1004 |
return -1; |
1005 |
else |
1006 |
return idx - chars(); |
1007 |
} |
1008 |
|
1009 |
int GStr::rindex(char c, int end_index) const { |
1010 |
if (c == 0 || length()==0 || end_index>=length()) return -1; |
1011 |
if (end_index<0) end_index=my_data->length-1; |
1012 |
for (int i=end_index;i>=0;i--) { |
1013 |
if (my_data->chars[i]==c) return i; |
1014 |
} |
1015 |
return -1; |
1016 |
} |
1017 |
|
1018 |
int GStr::rindex(const char* str, int end_index) const { |
1019 |
if (str==NULL || *str == '\0' || length()==0 || end_index>=length()) |
1020 |
return -1; |
1021 |
int slen=strlen(str); |
1022 |
if (end_index<0) end_index=my_data->length-1; |
1023 |
//end_index is the index of the right-side boundary |
1024 |
//the scanning starts at the end |
1025 |
if (end_index>=0 && end_index<slen-1) return -1; |
1026 |
for (int i=end_index-slen+1;i>=0;i--) { |
1027 |
if (memcmp((void*)(my_data->chars+i),(void*)str, slen)==0) |
1028 |
return i; |
1029 |
} |
1030 |
return -1; |
1031 |
} |
1032 |
|
1033 |
GStr GStr::split(const char* delim) { |
1034 |
/* splits "this" in two parts, at the first (left) |
1035 |
encounter of delim: |
1036 |
1st would stay in "this", |
1037 |
2nd part will be returned |
1038 |
as a new string! |
1039 |
*/ |
1040 |
GStr result; |
1041 |
int i=index(delim); |
1042 |
if (i>=0){ |
1043 |
result=substr(i+strlen(delim)); |
1044 |
cut(i); |
1045 |
return result; |
1046 |
} |
1047 |
return result; |
1048 |
} |
1049 |
|
1050 |
GStr GStr::split(char c) { |
1051 |
/* splits "this" in two parts, at the first (left) |
1052 |
encounter of delim: |
1053 |
1st would stay in "this", |
1054 |
2nd part will be returned |
1055 |
as a new string! |
1056 |
*/ |
1057 |
GStr result; |
1058 |
int i=index(c); |
1059 |
if (i>=0){ |
1060 |
result=substr(i+1); |
1061 |
cut(i); |
1062 |
return result; |
1063 |
} |
1064 |
return result; |
1065 |
} |
1066 |
|
1067 |
GStr GStr::splitr(const char* delim) { |
1068 |
GStr result; |
1069 |
int i=rindex(delim); |
1070 |
if (i>=0){ |
1071 |
result=substr(i+strlen(delim)); |
1072 |
cut(i); |
1073 |
return result; |
1074 |
} |
1075 |
return result; |
1076 |
} |
1077 |
|
1078 |
GStr GStr::splitr(char c) { |
1079 |
GStr result; |
1080 |
int i=rindex(c); |
1081 |
if (i>=0){ |
1082 |
result=substr(i+1); |
1083 |
cut(i); |
1084 |
return result; |
1085 |
} |
1086 |
return result; |
1087 |
} |
1088 |
|
1089 |
|
1090 |
void GStr::startTokenize(const char* delimiter, enTokenizeMode tokenizemode) { |
1091 |
GFREE(fTokenDelimiter); |
1092 |
GMALLOC(fTokenDelimiter,strlen(delimiter)+1); |
1093 |
strcpy(fTokenDelimiter, delimiter); |
1094 |
fLastTokenStart=0; |
1095 |
fTokenizeMode=tokenizemode; |
1096 |
} |
1097 |
|
1098 |
bool GStr::nextToken(GStr& token) { |
1099 |
if (fTokenDelimiter==NULL) { |
1100 |
GError("GStr:: no token delimiter; use StartTokenize first\n"); |
1101 |
} |
1102 |
if (fLastTokenStart>=length()) {//no more |
1103 |
GFREE(fTokenDelimiter); |
1104 |
fLastTokenStart=0; |
1105 |
return false; |
1106 |
} |
1107 |
int dlen=strlen(fTokenDelimiter); |
1108 |
char* delpos=NULL; //delimiter position |
1109 |
int tlen=0; |
1110 |
if (fTokenizeMode==tkFullString) { //exact string as a delimiter |
1111 |
delpos=(char*)strstr(chars()+fLastTokenStart,fTokenDelimiter); |
1112 |
if (delpos==NULL) delpos=(char*)(chars()+length()); |
1113 |
//empty records may be returned |
1114 |
if (chars()+fLastTokenStart == delpos) { //empty token |
1115 |
fLastTokenStart=(delpos-chars())+dlen; |
1116 |
token=""; |
1117 |
return true; |
1118 |
} |
1119 |
else { |
1120 |
tlen=delpos-(chars()+fLastTokenStart); |
1121 |
token.replace_data(tlen); |
1122 |
::memcpy(token.chrs(), &chars()[fLastTokenStart], tlen); |
1123 |
fLastTokenStart=(delpos-chars())+dlen; |
1124 |
return true; |
1125 |
} |
1126 |
} |
1127 |
else { //tkCharSet - any character is a delimiter |
1128 |
//empty records are never returned ! |
1129 |
if (fLastTokenStart==0) {//skip any starting delimiters |
1130 |
delpos=(char*)chars(); |
1131 |
while (*delpos!='\0' && strchr(fTokenDelimiter, *delpos)!=NULL) |
1132 |
delpos++; |
1133 |
if (*delpos!='\0') |
1134 |
fLastTokenStart = delpos-chars(); |
1135 |
else { //only delimiters here,no tokens |
1136 |
GFREE(fTokenDelimiter); |
1137 |
fLastTokenStart=0; |
1138 |
return false; |
1139 |
} |
1140 |
} |
1141 |
//now fLastTokenStart is on a non-delimiter char |
1142 |
//GMessage("String at fLastTokenStart=%d is %s\n", fLastTokenStart, delpos); |
1143 |
char* token_end=NULL; |
1144 |
delpos=(char*)strpbrk(chars()+fLastTokenStart,fTokenDelimiter); |
1145 |
if (delpos==NULL) delpos=(char*)(chars()+length()); |
1146 |
token_end=delpos-1; |
1147 |
while (*delpos!='\0' && strchr(fTokenDelimiter, *delpos)!=NULL) |
1148 |
delpos++; //skip any other delimiters in the set! |
1149 |
//now we know that delpos is on the beginning of next token |
1150 |
tlen=(token_end-chars())-fLastTokenStart+1; |
1151 |
if (tlen==0) { |
1152 |
GFREE(fTokenDelimiter); |
1153 |
fLastTokenStart=0; |
1154 |
return false; |
1155 |
} |
1156 |
token.replace_data(tlen); |
1157 |
::memcpy(token.chrs(), &chars()[fLastTokenStart], tlen); |
1158 |
fLastTokenStart=delpos-chars(); |
1159 |
return true; |
1160 |
} |
1161 |
//return true; |
1162 |
} |
1163 |
|
1164 |
size_t GStr::read(FILE* stream, const char* delimiter, size_t bufsize) { |
1165 |
//read up to (and including) the given delimiter string |
1166 |
if (readbuf==NULL) { |
1167 |
GMALLOC(readbuf, bufsize); |
1168 |
readbufsize=bufsize; |
1169 |
} |
1170 |
else if (bufsize!=readbufsize) { |
1171 |
GFREE(readbuf); |
1172 |
if (bufsize>0) { |
1173 |
GMALLOC(readbuf, bufsize); |
1174 |
} |
1175 |
readbufsize=bufsize; |
1176 |
} |
1177 |
if (bufsize==0) { |
1178 |
replace_data(0); |
1179 |
return 0; //clear the string and free the buffer |
1180 |
} |
1181 |
size_t numread; |
1182 |
size_t acc_len=0; //accumulated length |
1183 |
int seplen=strlen(delimiter); |
1184 |
void* p=NULL; |
1185 |
Data *data = new_data(0); |
1186 |
do { |
1187 |
numread=fread(readbuf, 1, bufsize, stream); |
1188 |
if (numread) { |
1189 |
p=Gmemscan(readbuf, bufsize, (void*) delimiter, seplen); |
1190 |
if (p!=NULL) {//found the delimiter |
1191 |
//position the stream after it |
1192 |
int l = (char*)p-(char*)readbuf; |
1193 |
fseek(stream, l+seplen-numread, SEEK_CUR); |
1194 |
numread=l+seplen; |
1195 |
} |
1196 |
else {//not found, go back if not eof |
1197 |
if (numread==bufsize) { |
1198 |
fseek(stream, -seplen, SEEK_CUR); //check if this works! |
1199 |
numread-=seplen; |
1200 |
} |
1201 |
} |
1202 |
if (data==&null_data) { |
1203 |
data=new_data(numread); |
1204 |
::memcpy(data->chars, readbuf, numread); |
1205 |
acc_len+=numread; |
1206 |
} |
1207 |
else { |
1208 |
GREALLOC(data, sizeof(Data)+acc_len+numread); |
1209 |
memcpy(&data->chars[acc_len], readbuf, numread); |
1210 |
acc_len+=numread; |
1211 |
data->length=acc_len; |
1212 |
data->chars[acc_len]='\0'; |
1213 |
} |
1214 |
} //if something read |
1215 |
} while (p==NULL && numread!=0); |
1216 |
replace_data(data); |
1217 |
return acc_len; |
1218 |
} |
1219 |
|
1220 |
|
1221 |
int GStr::asInt(int base /*=10 */) { |
1222 |
return strtol(text(), NULL, base); |
1223 |
} |
1224 |
|
1225 |
bool GStr::asInt(int& r, int base) { |
1226 |
errno=0; |
1227 |
char*endptr; |
1228 |
long val=strtol(text(), &endptr, base); |
1229 |
if (errno!=0) return false; |
1230 |
if (endptr == text()) return false; |
1231 |
/* If we got here, strtol() successfully parsed a number */ |
1232 |
r=val; |
1233 |
return true; |
1234 |
} |
1235 |
|
1236 |
double GStr::asReal() { |
1237 |
return strtod(text(), NULL); |
1238 |
} |
1239 |
|
1240 |
bool GStr::asReal(double& r) { |
1241 |
errno=0; |
1242 |
char* endptr; |
1243 |
double val=strtod(text(), &endptr); |
1244 |
if (errno!=0) return false; |
1245 |
if (endptr == text()) return false; //no digits to parse |
1246 |
r=val; |
1247 |
return true; |
1248 |
} |
1249 |
|
1250 |
|
1251 |
int GStr::peelInt() const { |
1252 |
if (is_empty()) return 0; |
1253 |
char buf[24]; |
1254 |
bool started=false; |
1255 |
int j=0; |
1256 |
int i; |
1257 |
for (i=0;i<length();i++) { |
1258 |
if (started) { |
1259 |
if (isdigit(my_data->chars[i])) j++; //set coord |
1260 |
else break; //finished |
1261 |
} |
1262 |
else |
1263 |
if (isdigit(my_data->chars[i])) { |
1264 |
j++; started=true; |
1265 |
} |
1266 |
} |
1267 |
if (j>0) { |
1268 |
strncpy(buf, &my_data->chars[i-j], j); |
1269 |
buf[j]='\0'; |
1270 |
return strtol(buf, NULL, 10); |
1271 |
} |
1272 |
return 0; |
1273 |
} |
1274 |
|
1275 |
int GStr::peelIntR() const { |
1276 |
if (is_empty()) return 0; |
1277 |
char buf[24]; |
1278 |
bool started=false; |
1279 |
int j=0; |
1280 |
int i; |
1281 |
for (i=length()-1;i>=0;i--) { |
1282 |
if (started) { |
1283 |
if (isdigit(my_data->chars[i])) j++; //set length |
1284 |
else break; //finished |
1285 |
} |
1286 |
else |
1287 |
if (isdigit(my_data->chars[i])) { |
1288 |
j++; started=true; |
1289 |
} |
1290 |
} |
1291 |
if (j>0) { |
1292 |
strncpy(buf, &my_data->chars[i+1], j); |
1293 |
buf[j]='\0'; |
1294 |
return strtol(buf, NULL, 10); |
1295 |
} |
1296 |
return 0; |
1297 |
} |
1298 |
|
1299 |
GStr GStr::to(char c) { //return the first part up to first occurence of c |
1300 |
int i=index(c); |
1301 |
if (i>=0) return substr(0,i); |
1302 |
else return (*this); |
1303 |
} |
1304 |
//or whole string if c not found |
1305 |
GStr GStr::from(char c) { //same as to, but starting from the right side |
1306 |
int i=rindex(c); |
1307 |
if (i>=0) return substr(i+1); |
1308 |
else return (*this); |
1309 |
} |
1310 |
|
1311 |
int GStr::count(char c){ |
1312 |
//return the number of occurences of char c within the string |
1313 |
int result=0; |
1314 |
for (int i=0;i<length();i++) |
1315 |
if (my_data->chars[i]==c) result++; |
1316 |
return result; |
1317 |
} |
1318 |
|
1319 |
//========================================= |
1320 |
|
1321 |
void GStr::invalid_args_error(const char *fname) { |
1322 |
GError("GStr:: %s - invalid arguments\n", fname); |
1323 |
} |
1324 |
|
1325 |
//**************************************************************************** |
1326 |
|
1327 |
void GStr::invalid_index_error(const char *fname) { |
1328 |
GError("GStr:: %s - invalid index\n", fname); |
1329 |
} |
1330 |
//**************************************************************************** |