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/**
* vimb - a webkit based vim like browser.
*
* Copyright (C) 2012-2018 Daniel Carl
*
* This program 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 3 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
#include <glib.h>
#include <string.h>
#include "ascii.h"
#include "main.h"
#include "shortcut.h"
#include "util.h"
struct shortcut {
GHashTable *table;
char *fallback; /* default shortcut to use if none given in request */
};
extern struct Vimb vb;
static int get_max_placeholder(const char *str);
static const char *shortcut_lookup(Shortcut *sc, const char *string, const char **query);
Shortcut *shortcut_new(void)
{
Shortcut *sc = g_new(Shortcut, 1);
sc->table = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, g_free);
sc->fallback = NULL;
return sc;
}
void shortcut_free(Shortcut *sc)
{
if (sc->table) {
g_hash_table_destroy(sc->table);
}
g_free(sc);
}
gboolean shortcut_add(Shortcut *sc, const char *key, const char *uri)
{
g_hash_table_insert(sc->table, g_strdup(key), g_strdup(uri));
return TRUE;
}
gboolean shortcut_remove(Shortcut *sc, const char *key)
{
return g_hash_table_remove(sc->table, key);
}
gboolean shortcut_set_default(Shortcut *sc, const char *key)
{
/* do not check if the shortcut exists to be able to set the default
* before defining the shortcut */
OVERWRITE_STRING(sc->fallback, key);
return TRUE;
}
/**
* Retrieves the uri for given query string. Not that the memory of the
* returned uri must be freed.
*/
char *shortcut_get_uri(Shortcut *sc, const char *string)
{
const char *tmpl, *query = NULL;
char *uri, *quoted_param;
int max_num, current_num;
GString *token;
tmpl = shortcut_lookup(sc, string, &query);
if (!tmpl) {
return NULL;
}
max_num = get_max_placeholder(tmpl);
/* if there are only $0 placeholders we don't need to split the parameters */
if (max_num == 0) {
quoted_param = soup_uri_encode(query, "&+");
uri = util_str_replace("$0", quoted_param, tmpl);
g_free(quoted_param);
return uri;
}
uri = g_strdup(tmpl);
/* skip if no placeholders found */
if (max_num < 0) {
return uri;
}
current_num = 0;
token = g_string_new(NULL);
while (*query) {
/* parse the query tokens */
if (*query == '"' || *query == '\'') {
/* save the last used quote char to find it's matching counterpart */
char last_quote = *query;
/* skip the quote */
query++;
/* collect the char until the closing quote or end of string */
while (*query && *query != last_quote) {
g_string_append_c(token, *query);
query++;
}
/* if we end up at the closing quote - skip this quote too */
if (*query == last_quote) {
query++;
}
} else if (VB_IS_SPACE(*query)) {
/* skip whitespace */
query++;
continue;
} else if (current_num >= max_num) {
/* if we have parsed as many params like placeholders - put the
* rest of the query as last parameter */
while (*query) {
g_string_append_c(token, *query);
query++;
}
} else {
/* collect the following character up to the next whitespace */
while (*query && !VB_IS_SPACE(*query)) {
g_string_append_c(token, *query);
query++;
}
}
/* replace the placeholders with parsed token */
if (token->len) {
char *new;
quoted_param = soup_uri_encode(token->str, "&+");
new = util_str_replace((char[]){'$', current_num + '0', '\0'}, quoted_param, uri);
g_free(quoted_param);
g_free(uri);
uri = new;
/* truncate the last token to fill for next loop */
g_string_truncate(token, 0);
}
current_num++;
}
g_string_free(token, TRUE);
return uri;
}
gboolean shortcut_fill_completion(Shortcut *sc, GtkListStore *store, const char *input)
{
GList *src = g_hash_table_get_keys(sc->table);
gboolean found = util_fill_completion(store, input, src);
g_list_free(src);
return found;
}
/**
* Retrieves th highest placeholder number used in given string.
* If no placeholder is found -1 is returned.
*/
static int get_max_placeholder(const char *str)
{
int n, res;
for (n = 0, res = -1; *str; str++) {
if (*str == '$') {
n = *(++str) - '0';
if (0 <= n && n <= 9 && n > res) {
res = n;
}
}
}
return res;
}
/**
* Retrieves the shortcut uri template for given string. And fills given query
* pointer with the query part of the given string (everything except of the
* shortcut identifier).
*/
static const char *shortcut_lookup(Shortcut *sc, const char *string, const char **query)
{
char *p, *uri = NULL;
if ((p = strchr(string, ' '))) {
char *key = g_strndup(string, p - string);
/* is the first word might be a shortcut */
if ((uri = g_hash_table_lookup(sc->table, key))) {
*query = p + 1;
}
g_free(key);
} else {
uri = g_hash_table_lookup(sc->table, string);
}
if (!uri && sc->fallback
&& (uri = g_hash_table_lookup(sc->table, sc->fallback))) {
*query = string;
}
return uri;
}
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