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/*******************************************************************************
* String tools
******************************************************************************/
char* dc_strdup(const char* s) /* strdup(NULL) is undefined, save_strdup(NULL) returns an empty string in this case */
{
char* ret = NULL;
if (s) {
if ((ret=strdup(s))==NULL) {
exit(16); /* cannot allocate (little) memory, unrecoverable error */
}
}
else {
if ((ret=(char*)calloc(1, 1))==NULL) {
exit(17); /* cannot allocate little memory, unrecoverable error */
}
}
return ret;
}
char* dc_strdup_keep_null(const char* s) /* strdup(NULL) is undefined, safe_strdup_keep_null(NULL) returns NULL in this case */
{
return s? dc_strdup(s) : NULL;
}
int dc_atoi_null_is_0(const char* s)
{
return s? atoi(s) : 0;
}
double dc_atof(const char* str)
{
// hack around atof() that may accept only `,` as decimal point on mac
char* test = dc_mprintf("%f", 1.2);
test[2] = 0;
char* str_locale = dc_strdup(str);
dc_str_replace(&str_locale, ".", test+1);
double f = atof(str_locale);
free(test);
free(str_locale);
return f;
}
char* dc_ftoa(double f)
{
// hack around printf(%f) that may return `,` as decimal point on mac
char* test = dc_mprintf("%f", 1.2);
test[2] = 0;
char* str = dc_mprintf("%f", f);
dc_str_replace(&str, test+1, ".");
free(test);
return str;
}
void dc_ltrim(char* buf)
{
size_t len = 0;
const unsigned char* cur = NULL;
if (buf && *buf) {
len = strlen(buf);
cur = (const unsigned char*)buf;
while (*cur && isspace(*cur)) {
cur++; len--;
}
if ((const unsigned char*)buf!=cur) {
memmove(buf, cur, len + 1);
}
}
}
void dc_rtrim(char* buf)
{
size_t len = 0;
unsigned char* cur = NULL;
if (buf && *buf) {
len = strlen(buf);
cur = (unsigned char*)buf + len - 1;
while (cur!=(unsigned char*)buf && isspace(*cur)) {
--cur, --len;
}
cur[isspace(*cur) ? 0 : 1] = '\0';
}
}