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#include "internal.h"
#include "version.h"
#include "3rdparty/tinydir.h"
#include "3rdparty/cdl.h"
#include <unistd.h>
#include <stdio.h>
#include <assert.h>
static struct list renderers;
static void
bm_renderer_free(struct bm_renderer *renderer)
{
assert(renderer);
if (renderer->handle)
chckDlUnload(renderer->handle);
free(renderer->name);
free(renderer->file);
free(renderer);
}
static bool
load(const char *file, struct bm_renderer *renderer)
{
void *handle;
const char *error = NULL;
if (!(handle = chckDlLoad(file, &error)))
goto load_fail;
const char* (*regfun)(struct render_api*);
if (!(regfun = chckDlLoadSymbol(handle, "register_renderer", &error)))
goto load_fail;
const char *name;
if (!(name = regfun(&renderer->api)))
goto fail;
if (strcmp(renderer->api.version, BM_PLUGIN_VERSION))
goto mismatch_fail;
if (!renderer->name)
renderer->name = bm_strdup(name);
if (!renderer->file)
renderer->file = bm_strdup(file);
renderer->handle = handle;
return true;
load_fail:
fprintf(stderr, "%s\n", error);
goto fail;
mismatch_fail:
fprintf(stderr, "%s: version mismatch (%s != %s)\n", name, renderer->api.version, BM_PLUGIN_VERSION);
fail:
if (handle)
chckDlUnload(handle);
return false;
}
static int
compare(const void *a, const void *b)
{
const struct bm_renderer *ra = *(struct bm_renderer**)a, *rb = *(struct bm_renderer**)b;
return (ra->api.priorty > rb->api.priorty);
}
static bool
load_to_list(const char *file)
{
struct bm_renderer *renderer;
if (!(renderer = calloc(1, sizeof(struct bm_renderer))))
goto fail;
if (!load(file, renderer))
goto fail;
chckDlUnload(renderer->handle);
renderer->handle = NULL;
if (!list_add_item(&renderers, renderer))
goto fail;
list_sort(&renderers, compare);
return true;
fail:
if (renderer)
bm_renderer_free(renderer);
return false;
}
bool
bm_renderer_activate(struct bm_renderer *renderer, struct bm_menu *menu)
{
assert(renderer);
if (!load(renderer->file, renderer))
return false;
menu->renderer = renderer;
if (!renderer->api.constructor(menu))
goto fail;
return true;
fail:
chckDlUnload(renderer->handle);
menu->renderer = NULL;
return false;
}
bool
bm_init(void)
{
if (renderers.count > 0)
return true;
static const char *rpath = INSTALL_LIBDIR "/bemenu";
const char *path = secure_getenv("BEMENU_RENDERER");
if (path)
return load_to_list(path);
path = secure_getenv("BEMENU_RENDERERS");
if (!path || access(path, R_OK) == -1)
path = rpath;
tinydir_dir dir;
if (tinydir_open(&dir, path) == -1)
goto fail;
while (dir.has_next) {
tinydir_file file;
memset(&file, 0, sizeof(file));
tinydir_readfile(&dir, &file);
if (!file.is_dir && !strncmp(file.name, "bemenu-renderer-", strlen("bemenu-renderer-"))) {
char *fpath;
if ((fpath = bm_dprintf("%s/%s", path, file.name))) {
load_to_list(fpath);
free(fpath);
}
}
tinydir_next(&dir);
}
tinydir_close(&dir);
return (renderers.count > 0 ? true : false);
fail:
return false;
}
const struct bm_renderer**
bm_get_renderers(uint32_t *out_nmemb)
{
assert(out_nmemb);
return list_get_items(&renderers, out_nmemb);
}
const char*
bm_version(void)
{
return BM_VERSION;
}
const char*
bm_renderer_get_name(const struct bm_renderer *renderer)
{
assert(renderer);
return renderer->name;
}
enum bm_priorty
bm_renderer_get_priorty(const struct bm_renderer *renderer)
{
assert(renderer);
return renderer->api.priorty;
}
/* vim: set ts=8 sw=4 tw=0 :*/
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