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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
static int
find(char **outp, const char *dir_part1, const char *dir_part2, const char *dir_part3, struct libfonts_context *ctx)
{
return 0; /* TODO */
}
static int
getn(char **outp, const char *file_part1, size_t file_part1_len, const char *file_part2,
const char *name, struct libfonts_context *ctx)
{
size_t file_part2_len = strlen(file_part2);
char *path;
if (file_part1_len > SIZE_MAX - file_part2_len - 1)
goto enomem;
path = malloc(file_part1_len + file_part2_len + 1);
if (!path) {
enomem:
errno = ENOMEM;
return -1;
}
memcpy(path, file_part1, file_part1_len);
memcpy(&path[file_part1_len], file_part2, file_part2_len + 1);
/* TODO
* sans-serif = $FONTNAME
* serif = $FONTNAME
* monospace = $FONTNAME
*/
free(path);
return 0;
}
static int
get(char **outp, const char *file_part1, const char *file_part2, const char *name, struct libfonts_context *ctx)
{
return getn(outp, file_part1, strlen(file_part1), file_part2, name, ctx);
}
char *
libfonts_get_default_font(enum libfonts_default_font font, struct libfonts_context *ctx)
{
const char *env, *var, *next, *confenv, *homeenv;
char *ret, *home = NULL;
int r, saved_errno = errno;
size_t len;
if (font == LIBFONTS_DEFAULT_SANS_SERIF) {
env = "LIBFONTS_DEFAULT_SANS_SERIF";
var = "sans-serif";
} else if (font == LIBFONTS_DEFAULT_SERIF) {
env = "LIBFONTS_DEFAULT_SERIF";
var = "serif";
} else if (font == LIBFONTS_DEFAULT_MONOSPACE) {
env = "LIBFONTS_DEFAULT_MONOSPACE";
var = "monospace";
} else {
errno = EINVAL;
return NULL;
}
env = libfonts_getenv__(env, ctx);
if (env && *env)
return strdup(env);
confenv = libfonts_getenv__("XDG_CONFIG_HOME", ctx);
if (confenv && *confenv) {
r = get(&ret, confenv, "/libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
}
homeenv = libfonts_getenv__("HOME", ctx);
if (homeenv && *homeenv) {
r = get(&ret, homeenv, "/.config/libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
r = get(&ret, homeenv, "/.libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
}
home = libfonts_gethome__(ctx);
if (home && *home) {
r = get(&ret, home, "/.config/libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
r = get(&ret, home, "/.libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
}
if (confenv && *confenv) {
r = find(&ret, env, "/libfonts/", var, ctx);
if (r)
goto out;
}
if (homeenv && *homeenv) {
r = find(&ret, homeenv, "/.config/libfonts/", var, ctx);
if (r)
goto out;
r = find(&ret, homeenv, "/.libfonts/", var, ctx);
if (r)
goto out;
}
if (home && *home) {
r = find(&ret, home, "/.config/libfonts/", var, ctx);
if (r)
goto out;
r = find(&ret, home, "/.libfonts/", var, ctx);
if (r)
goto out;
}
env = libfonts_getenv__("XDG_CONFIG_DIRS", ctx);
if (env && *env) {
do {
next = strchr(&env[1], ':');
len = next ? (size_t)(next - env) : strlen(env);
if (len) {
r = getn(&ret, env, len, "/libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
}
env += len + 1;
} while (next);
}
r = get(&ret, "/etc", "/libfonts/default-fonts.conf", var, ctx);
if (r)
goto out;
r = find(&ret, "/etc", "/libfonts/", var, ctx);
if (r)
goto out;
/* TODO
* as a last resort look around for some
* font that matches the specification as
* well as possible
*/
ret = NULL;
r = 0;
out:
free(home);
if (r < 0)
return NULL;
errno = saved_errno;
return ret;
}
#else
int
main(void)
{
return 0; /* TODO add test */
}
#endif
|
