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/* text.c - Text helper functions */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <err.h>
#include <stdlib.h>
#include <string.h>
#include "extern/text.h"
/* Optimized strdup() version with known string length */
char *xstrdup(const char *str, size_t len) {
char *nstr; size_t nlen = len + 1;
if ((nstr = malloc(nlen)) == NULL) return nstr;
return memcpy(nstr, str, nlen); }
/* Append text to buffer */
char *text_strupd(char *dst, char *src) {
char *p;
size_t len;
if (src == NULL) { return dst; }
len = strlen(src);
if (dst != NULL) { len += strlen(dst); }
p = dst;
if ((dst = realloc(dst, len+1)) == NULL) {
err(EXIT_FAILURE, "memory"); }
if (p == NULL) { *dst = '\0'; }
if (strcat(dst, src) == NULL) {
errx(EXIT_FAILURE, "text: append failed"); }
return dst; }
/* Append text to buffer (+ space separator if needed) */
char *text_strupds(char *dst, char *src) {
char *p, *q;
int i;
size_t len;
if (src == NULL) { return dst; }
p = src; while (*p && *p == ' ' && *(p+1) && *(p+1) == ' ') p++;
i = 0;
if (dst != NULL) {
i = 1;
q = dst; while (*q) { q++; }
if (q - dst > 0) { q--; }
if (q == dst || *p == ' ' || *q == ' ' || (*q == '-' && *(q-1) != ' ')) { i = 0; }
}
len = i + strlen(p);
if (dst != NULL) { len += strlen(dst); }
q = dst;
if ((dst = realloc(dst, len+1)) == NULL) {
err(EXIT_FAILURE, "memory"); }
if (q == NULL) { *dst = '\0'; }
if (i == 1 && strcat(dst, " ") == NULL) {
errx(EXIT_FAILURE, "text: append failed"); }
if (strcat(dst, p) == NULL) {
errx(EXIT_FAILURE, "text: append failed"); }
return dst; }
char **text_keyadd(char **dst, char *src) {
char **x;
int i;
size_t len;
if (src == NULL) { return dst; }
x = dst; i = 1;
while (x && *x) { i++; x++; }
x = dst;
len = (i+1) * sizeof(*x);
if ((dst = (char **)realloc(dst, len)) == NULL) {
err(EXIT_FAILURE, "memory"); }
i--;
if (i == 0) { *dst = NULL; }
x = dst + i;
*x = *(x+1) = NULL;
*x = text_strupd(*x, src);
return dst; }
char **text_keyupd(char **dst, char *src) {
char **x;
if (src == NULL) { return dst; }
x = dst;
while (x && *x) { x++; }
x--;
*x = text_strupds(*x, src);
return dst; }
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