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/* See LICENSE file for copyright and license details. */
#include "common.h"
#ifndef TEST
static char *
find(const char *dir_part1, const char *dir_part2, const char *dir_part3)
{
return NULL; /* TODO */
}
static char *
gethome(void)
{
uid_t uid = getuid();
size_t size = 512;
char *buf = NULL, *new;
char *ret = NULL;
struct passwd pw, *pwp;
int err;
goto beginning;
do {
if (size > SIZE_MAX / 2)
goto enomem;
size *= 2;
beginning:
new = realloc(buf, size);
if (!new) {
enomem:
free(buf);
errno = ENOMEM;
return NULL;
}
buf = new;
} while ((err = getpwuid_r(uid, &pw, buf, size, &pwp)) == ERANGE);
if (err) {
free(buf);
return NULL;
}
if (pwp && pwp->pw_dir)
ret = strdup(pwp->pw_dir);
free(buf);
return ret;
}
static char *
getn(const char *file_part1, size_t file_part1_len, const char *file_part2, const char *name)
{
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 NULL;
}
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 NULL;
}
static char *
get(const char *file_part1, const char *file_part2, const char *name)
{
return getn(file_part1, strlen(file_part1), file_part2, name);
}
char *
libfonts_get_default_font(enum libfonts_default_font font)
{
const char *env, *var, *next;
char *ret, *home = NULL;
int 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;
}
ret = getenv(env);
if (ret && *ret)
return strdup(ret);
env = getenv("XDG_CONFIG_HOME");
if (env && *env) {
ret = get(env, "/libfonts/default-fonts.conf", var);
if (ret)
goto out;
}
env = getenv("HOME");
if (env && *env) {
ret = get(env, "/.config/libfonts/default-fonts.conf", var);
if (ret)
goto out;
ret = get(env, "/.libfonts/default-fonts.conf", var);
if (ret)
goto out;
}
home = gethome();
if (home && *home) {
ret = get(home, "/.config/libfonts/default-fonts.conf", var);
if (ret)
goto out;
ret = get(home, "/.libfonts/default-fonts.conf", var);
if (ret)
goto out;
}
env = getenv("XDG_CONFIG_HOME");
if (env && *env) {
ret = find(env, "/libfonts/", var);
if (ret)
goto out;
}
env = getenv("HOME");
if (env && *env) {
ret = find(env, "/.config/libfonts/", var);
if (ret)
goto out;
ret = find(env, "/.libfonts/", var);
if (ret)
goto out;
}
if (home && *home) {
ret = find(env, "/.config/libfonts/", var);
if (ret)
goto out;
ret = find(env, "/.libfonts/", var);
if (ret)
goto out;
}
env = getenv("XDG_CONFIG_DIRS");
if (env && *env) {
do {
next = strchr(&env[1], ':');
len = next ? (size_t)(next - env) : strlen(env);
if (len) {
ret = getn(env, len, "/libfonts/default-fonts.conf", var);
if (ret)
goto out;
}
env += len + 1;
} while (next);
}
ret = get("/etc", "/libfonts/default-fonts.conf", var);
if (ret)
goto out;
ret = find("/etc", "/libfonts/", var);
if (ret)
goto out;
/* TODO
* as a last resort look around for some
* font that matches the specification as
* well as possible
*/
ret = NULL;
out:
free(home);
errno = saved_errno;
return ret;
}
#else
int
main(void)
{
return 0; /* TODO add test */
}
#endif
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