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#define _POSIX_SOURCE
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include "util.h"
const XDG_Var XDG[] = {
{ "XDG_CONFIG_HOME", "~/.config" },
{ "XDG_DATA_HOME", "~/.local/share" },
{ "XDG_CACHE_HOME", "~/.cache" },
{ "XDG_CONFIG_DIRS", "/etc/xdg" },
{ "XDG_DATA_DIRS", "/usr/local/share/:/usr/share/" },
};
/*@null@*/ gchar*
get_xdg_var (XDG_Var xdg) {
const gchar* actual_value = getenv (xdg.environmental);
const gchar* home = getenv ("HOME");
gchar* return_value;
if (! actual_value || strcmp (actual_value, "") == 0) {
if (xdg.default_value) {
return_value = str_replace ("~", home, xdg.default_value);
} else {
return_value = NULL;
}
} else {
return_value = str_replace("~", home, actual_value);
}
return return_value;
}
/*@null@*/ gchar*
find_xdg_file (int xdg_type, const char* filename) {
/* xdg_type = 0 => config
xdg_type = 1 => data
xdg_type = 2 => cache*/
gchar* xdgv = get_xdg_var (XDG[xdg_type]);
gchar* temporary_file = g_strconcat (xdgv, filename, NULL);
g_free (xdgv);
gchar* temporary_string;
char* saveptr;
char* buf;
if (! file_exists (temporary_file) && xdg_type != 2) {
buf = get_xdg_var (XDG[3 + xdg_type]);
temporary_string = (char *) strtok_r (buf, ":", &saveptr);
g_free(buf);
while ((temporary_string = (char * ) strtok_r (NULL, ":", &saveptr)) && ! file_exists (temporary_file)) {
g_free (temporary_file);
temporary_file = g_strconcat (temporary_string, filename, NULL);
}
}
//g_free (temporary_string); - segfaults.
if (file_exists (temporary_file)) {
return temporary_file;
} else {
g_free(temporary_file);
return NULL;
}
}
gboolean
file_exists (const char * filename) {
return (access(filename, F_OK) == 0);
}
char *
str_replace (const char* search, const char* replace, const char* string) {
gchar **buf;
char *ret;
if(!string)
return NULL;
buf = g_strsplit (string, search, -1);
ret = g_strjoinv (replace, buf);
g_strfreev(buf);
return ret;
}
gboolean
for_each_line_in_file(const gchar *path, void (*callback)(const gchar *l, void *c), void *user_data) {
gchar *line = NULL;
gsize len;
GIOChannel *chan = g_io_channel_new_file(path, "r", NULL);
if (chan) {
while (g_io_channel_read_line(chan, &line, &len, NULL, NULL) == G_IO_STATUS_NORMAL) {
callback(line, user_data);
g_free(line);
}
g_io_channel_unref (chan);
return TRUE;
}
return FALSE;
}
enum exp_type
get_exp_type(const gchar *s) {
/* variables */
if(*(s+1) == '(')
return EXP_EXPR;
else if(*(s+1) == '{')
return EXP_BRACED_VAR;
else if(*(s+1) == '<')
return EXP_JS;
else if(*(s+1) == '[')
return EXP_ESCAPE;
else
return EXP_SIMPLE_VAR;
/*@notreached@*/
return EXP_ERR;
}
/* search a PATH style string for an existing file+path combination */
gchar*
find_existing_file(gchar* path_list) {
int i=0;
int cnt;
gchar **split;
gchar *tmp = NULL;
gchar *executable;
if(!path_list)
return NULL;
split = g_strsplit(path_list, ":", 0);
while(split[i])
i++;
if(i<=1) {
tmp = g_strdup(split[0]);
g_strfreev(split);
return tmp;
}
else
cnt = i-1;
i=0;
tmp = g_strdup(split[cnt]);
g_strstrip(tmp);
if(tmp[0] == '/')
executable = g_strdup_printf("%s", tmp+1);
else
executable = g_strdup(tmp);
g_free(tmp);
while(i<cnt) {
tmp = g_strconcat(g_strstrip(split[i]), "/", executable, NULL);
if(g_file_test(tmp, G_FILE_TEST_EXISTS)) {
g_strfreev(split);
return tmp;
}
else
g_free(tmp);
i++;
}
g_free(executable);
g_strfreev(split);
return NULL;
}
gchar*
argv_idx(const GArray *a, const guint idx) {
return g_array_index(a, gchar*, idx);
}
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