colla/strutils.c
2021-10-03 17:03:11 +02:00

93 lines
No EOL
2.3 KiB
C

#include "strutils.h"
#include <string.h>
#include <stdlib.h>
#include <ctype.h>
#ifdef _WIN32
#define _BUFSZ 128
// modified from netbsd source http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/pkgtools/libnbcompat/files/getdelim.c?only_with_tag=MAIN
ssize_t getdelim(char **buf, size_t *bufsz, int delimiter, FILE *fp) {
char *ptr, *eptr;
if(*buf == NULL || *bufsz == 0) {
*bufsz = _BUFSZ;
if((*buf = malloc(*bufsz)) == NULL) {
return -1;
}
}
ssize_t result = -1;
// usually fgetc locks every read, using windows-specific
// _lock_file and _unlock_file will be faster
_lock_file(fp);
for(ptr = *buf, eptr = *buf + *bufsz;;) {
int c = _getc_nolock(fp);
if(c == -1) {
if(feof(fp)) {
ssize_t diff = (ssize_t)(ptr - *buf);
if(diff != 0) {
*ptr = '\0';
result = diff;
break;
}
}
break;
}
*ptr++ = c;
if(c == delimiter) {
*ptr = '\0';
result = ptr - *buf;
break;
}
if((ptr + 2) >= eptr) {
char *nbuf;
size_t nbufsz = *bufsz * 2;
ssize_t d = ptr - *buf;
if((nbuf = realloc(*buf, nbufsz)) == NULL) {
break;
}
*buf = nbuf;
*bufsz = nbufsz;
eptr = nbuf + nbufsz;
ptr = nbuf + d;
}
}
_unlock_file(fp);
return result;
}
// taken from netbsd source http://cvsweb.netbsd.org/bsdweb.cgi/pkgsrc/pkgtools/libnbcompat/files/getline.c?only_with_tag=MAIN
ssize_t getline(char **line_ptr, size_t *n, FILE *stream) {
return getdelim(line_ptr, n, '\n', stream);
}
#endif
void strToLower(char *str) {
for(char *beg = str; *beg; ++beg) {
*beg = tolower(*beg);
}
}
void strnToLower(char *str, size_t len) {
for(size_t i = 0; i < len; ++i) {
str[i] = tolower(str[i]);
}
}
char *cstrdup(const char *str) {
size_t len = strlen(str);
char *buf = malloc(len + 1);
memcpy(buf, str, len);
buf[len] = '\0';
return buf;
}
char *cstrToLower(const char *str) {
char *buf = cstrdup(str);
strToLower(buf);
return buf;
}