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util.c
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util.c
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/*
* Copyright (C) 2004-2011 Christos Tsantilas
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA.
*/
#include "common.h"
#include "c-icap.h"
#include "array.h"
#include "util.h"
#include <ctype.h>
#include <errno.h>
#include <limits.h>
const char *ci_strnstr(const char *s, const char *find, size_t slen)
{
size_t len = strlen(find);
if (len == 0)
return NULL;
while (len <= slen) {
if (*s == *find && strncmp(s, find, len) == 0 )
return s;
s++,slen--;
}
return NULL;
}
const char *ci_strcasestr(const char *str, const char *find)
{
const char *s, *c, *f;
for (s = str; *s != '\0'; ++s) {
for (f = find, c = s; ; ++f, ++c) {
if (*f == '\0') /*find matched s*/
return s;
if (*c == '\0') /*find is longer than the remaining string */
return NULL;
if (tolower(*c) != tolower(*f))
break;
}
}
return NULL;
}
const char *ci_strncasestr(const char *s, const char *find, size_t slen)
{
size_t len = strlen(find);
if (len == 0)
return NULL;
while (len <= slen) {
if (tolower(*s) == tolower(*find) && strncasecmp(s, find, len) == 0 )
return s;
s++,slen--;
}
return NULL;
}
static const char *atol_err_erange = "ERANGE";
static const char *atol_err_conversion = "CONVERSION_ERROR";
static const char *atol_err_nonumber = "NO_DIGITS_ERROR";
long int ci_atol_ext(const char *str, const char **error)
{
char *e;
long int val;
errno = 0;
val = strtol(str, &e, 10);
if (error) {
*error = NULL;
if (errno == ERANGE && (val == LONG_MAX || val == LONG_MIN))
*error = atol_err_erange;
else if (errno != 0 && val == 0)
*error = atol_err_conversion;
else if (e == str)
*error = atol_err_nonumber;
if (*error)
return 0;
}
if (val) {
if (*e == 'k' || * e == 'K')
val = val * 1024;
else if (*e == 'm' || * e == 'M')
val = val * 1024 * 1024;
}
return val;
}
void ci_str_trim(char *str)
{
char *s, *e;
if (!str)
return;
s = str;
e = NULL;
while (isspace((int)*s)) {
e = s;
while (*e != '\0') {
*e = *(e+1);
e++;
}
}
if (*s == '\0')
return;
e = str+strlen(str);
e--;
while (isspace((int)*e) && e >= str) {*e = '\0'; --e;};
}
char *ci_str_trim2(char *s)
{
char *e;
if (!s)
return NULL;
while (isspace((int)*s)) ++s;
if (*s == '\0')
return s;
e = s + strlen(s);
e--;
while (isspace((int)*e) && e >= s) {*e = '\0'; --e;};
return s;
}
char * ci_strerror(int error, char *buf, size_t buflen)
{
#if defined(STRERROR_R_CHAR_P)
return strerror_r(error, buf, buflen);
#elif defined(HAVE_STRERROR_R)
if (strerror_r(error, buf, buflen) == 0)
return buf;
#else
snprintf(buf, buflen, "%d", error);
return buf;
#endif
return NULL; /* not reached */
}
/*
TODO: support escaped chars,
*/
ci_dyn_array_t *ci_parse_key_value_list(const char *str, char sep)
{
char *s, *e, *k, *v;
ci_dyn_array_t *args_array;
s = strdup(str);
if (!s)
return NULL;
args_array = ci_dyn_array_new(1024);
k = s;
while (k) {
if ((e = strchr(k, sep))) {
*e = '\0';
e++;
}
if ((v = strchr(k, '='))) {
*v = '\0';
++v;
}
k = ci_str_trim2(k);
if (v)
v = ci_str_trim2(v);
if (*k) {
ci_dyn_array_add(args_array, k, v ? v : "", v ? strlen(v) + 1 : 1);
}
k = (e && *e) ? e : NULL;
}
free(s);
return args_array;
}
int ci_parse_key_mvalues(const char *line, char key_sep, char vals_sep, const ci_type_ops_t *key_type, const ci_type_ops_t *val_type, void **key, size_t *keysize, ci_vector_t **values)
{
ci_mem_allocator_t *allocator = ci_os_allocator;
int row_cols = 0;
const char *s, *e, *v;
*key = NULL;
*values = NULL;
*keysize = 0;
s = line;
while (isspace(*s)) s++;
if (*s == '#') /*it is a comment*/
return 1;
if (*s == '\0') /*it is a blank line*/
return 1;
if (!(e = strchr(s, key_sep))) {
row_cols = 1;
e = s + strlen(s);
} else {
row_cols = 2;
const char *cs = e;
while ((cs = strchr(cs, vals_sep))) row_cols++, cs++;
if (row_cols > 256)
return -1; /*Too many columns*/
}
v = e; /*save the pos of key separator*/
e--; /*points at the end of key*/
while(isspace(*e)) e--;
e++;
char tmp[32768];
if ((e - s) > sizeof(tmp) - 1)
return -2;
memcpy(tmp, s, e - s);
tmp[e - s] = '\0';
(*key) = key_type->dup(tmp, allocator);
(*keysize) = key_type->size(*key);
if (row_cols <= 1)
return 1; /*done, only key without values*/
/*Allocate a enough mem for storing the values*/
(*values) = ci_vector_create(65535);
s = v + 1; /*point after the key separator*/
int i;
for (i = 0; *s != '\0' && i< row_cols-1; i++) { /*we have vals*/
while (isspace(*s)) s++; /*find the start of the string*/
v = s;
e = s;
while (*e != vals_sep && *e != '\0') e++;
s = (*e == '\0' ? e : e + 1); /*Next start or the end*/
e--;
while (isspace(*e)) e--;
if ((e - v) > (sizeof(tmp) - 1)) {
ci_vector_destroy(*values);
*values = NULL;
allocator->free(allocator, *key);
*key = NULL;
return -2;
}
e++;
memcpy(tmp, v, e - v);
tmp[e - v] = '\0';
void *avalue = val_type->dup(tmp, allocator);
size_t avalue_size = val_type->size(avalue);
if (!ci_vector_add((*values), avalue, avalue_size)) {
ci_vector_destroy(*values);
*values = NULL;
allocator->free(allocator, *key);
*key = NULL;
allocator->free(allocator, avalue);
return -3;
}
allocator->free(allocator, avalue);
}
return 1;
}