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/**********************************************************************
*
* PostGIS - Spatial Types for PostgreSQL
* http://postgis.net
*
* PostGIS is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* PostGIS 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with PostGIS. If not, see <http://www.gnu.org/licenses/>.
*
**********************************************************************
*
* Copyright 2021 Paul Ramsey <pramsey@cleverelephant.ca>
*
**********************************************************************/
#include "liblwgeom_internal.h"
#include "optionlist.h"
#include <ctype.h> // tolower
#include <string.h> // strtok
static void
option_list_string_to_lower(char* key)
{
if (!key) return;
while (*key) {
*key = tolower(*key);
key++;
}
return;
}
// static void
// option_list_string_to_upper(char* key)
// {
// if (!key) return;
// while (*key) {
// *key = toupper(*key);
// key++;
// }
// return;
// }
const char*
option_list_search(char** olist, const char* key)
{
size_t i = 0;
if (!olist) return NULL;
if (!key) return NULL;
while (olist[i]) {
// Even entries are keys
if (!(i % 2)) {
// Does this key match ours?
if (strcmp(olist[i], key) == 0) {
return olist[i+1];
}
}
i++;
}
return NULL;
}
size_t
option_list_length(char** olist)
{
size_t i = 0;
char **iter = olist;
if (!olist) return 0;
while(*iter) {
i++;
iter++;
}
return i;
}
void
option_list_parse(char* input, char** olist)
{
const char *toksep = " ";
const char kvsep = '=';
char *key, *val;
if (!input) return;
size_t i = 0, sz;
/* strtok nulls out the space between each token */
for (key = strtok(input, toksep); key; key = strtok(NULL, toksep)) {
if (i >= OPTION_LIST_SIZE) return;
olist[i] = key;
i += 2;
}
sz = i;
/* keys are every second entry in the olist */
for (i = 0; i < sz; i += 2) {
if (i >= OPTION_LIST_SIZE) return;
key = olist[i];
/* find the key/value separator */
val = strchr(key, kvsep);
if (!val) {
lwerror("Option string entry '%s' lacks separator '%c'", key, kvsep);
}
/* null out the separator */
*val = '\0';
/* point value entry to just after separator */
olist[i+1] = ++val;
/* all keys forced to lower case */
option_list_string_to_lower(key);
}
}
void
option_list_gdal_parse(char* input, char** olist)
{
const char *toksep = " ";
const char kvsep = '=';
const char q2 = '"';
const char q1 = '\'';
const char notspace = 0x1F;
char *key, *val;
int in_str = 0;
size_t i = 0, sz, input_sz;
char *ptr = input;
if (!input)
lwerror("Option string is null");
input_sz = strlen(input);
/* Temporarily hide quoted spaces */
while(*ptr) {
if (*ptr == q2 || *ptr == q1)
in_str = !in_str;
else if (in_str && *ptr == ' ')
*ptr = notspace;
ptr++;
}
/* Tokenize on spaces */
for (key = strtok(input, toksep); key; key = strtok(NULL, toksep)) {
if (i >= OPTION_LIST_SIZE) return;
olist[i++] = key;
}
/* Check that these are GDAL KEY=VALUE options */
sz = i;
for (i = 0; i < sz; ++i) {
if (i >= OPTION_LIST_SIZE) return;
key = olist[i];
/* find the key/value separator */
val = strchr(key, kvsep);
if (!val) {
lwerror("Option string entry '%s' lacks separator '%c'", key, kvsep);
return;
}
}
/* Unhide quoted space */
for (i = 0; i <= input_sz; ++i) {
if (input[i] == notspace)
input[i] = ' ';
}
}
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