parent
93660bef77
commit
9e3aa2fe7f
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@ -216,37 +216,6 @@ main(int argc, char **argv)
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" This is because it is not on Linux AND has been\n"
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" Executed strangely. This is unusual.\n"
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);
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e_prefix_fallback();
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}
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else
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{
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/* do some extra tests to see if the prefix really is right */
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char buf[PATH_MAX];
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e_prefix_data_concat_static(buf, "data/themes/default.edj");
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if (!ecore_file_exists(buf))
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{
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printf("WARNING: Prefix guess was wrong. Guessed:\n"
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" %s\n"
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" Tried to find file:\n"
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" %s\n",
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e_prefix_get(), buf);
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e_prefix_fallback();
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}
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else
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{
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snprintf(buf, sizeof(buf), "%s/enlightenment/modules",
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e_prefix_lib_get());
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if (!ecore_file_is_dir(buf))
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{
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printf("WARNING: Prefix guess was wrong. Guessed:\n"
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" %s\n"
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" Tried to find directory:\n"
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" %s\n",
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e_prefix_get(), buf);
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e_prefix_fallback();
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}
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}
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}
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TS("prefix done");
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@ -1,556 +1,125 @@
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#include "e.h"
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/* local subsystem functions */
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static int _e_prefix_share_hunt(void);
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static int _e_prefix_fallbacks(void);
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static int _e_prefix_try_proc(void);
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static int _e_prefix_try_argv(char *argv0);
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static Eina_Prefix *pfx = NULL;
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/* local subsystem globals */
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static char *_exe_path = NULL;
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static char *_prefix_path = NULL;
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static char *_prefix_path_locale = NULL;
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static char *_prefix_path_bin = NULL;
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static char *_prefix_path_data = NULL;
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static char *_prefix_path_lib = NULL;
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static size_t _prefix_path_data_len = 0;
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#define PREFIX_CACHE_FILE 1
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#define SHARE_D "share/enlightenment"
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#define MAGIC_FILE "AUTHORS"
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#define MAGIC_DAT SHARE_D"/"MAGIC_FILE
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#define LOCALE_D "share/locale"
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static const char *_prefix_path_data = NULL;
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static unsigned int _prefix_path_data_len = 0;
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/* externally accessible functions */
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EAPI int
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e_prefix_determine(char *argv0)
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{
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char *p, buf[4096];
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if (pfx) return 1;
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pfx = eina_prefix_new(argv0, e_prefix_determine,
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"E", "enlightenment", "AUTHORS",
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PACKAGE_BIN_DIR,
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PACKAGE_LIB_DIR,
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PACKAGE_DATA_DIR,
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LOCALE_DIR);
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if (!pfx) return 0;
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_prefix_path_data = eina_prefix_data_get(pfx);
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_prefix_path_data_len= strlen(_prefix_path_data);
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e_prefix_shutdown();
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/* if user provides E_PREFIX - then use that or also more specific sub
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* dirs for bin, lib, data and locale */
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if (getenv("E_PREFIX"))
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{
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_prefix_path = strdup(getenv("E_PREFIX"));
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if (getenv("E_BIN_DIR"))
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_prefix_path_bin = strdup(getenv("E_BIN_DIR"));
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else
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{
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snprintf(buf, sizeof(buf), "%s/bin", _prefix_path);
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_prefix_path_bin = strdup(buf);
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e_util_env_set("E_BIN_DIR", _prefix_path_bin);
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}
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if (getenv("E_LIB_DIR"))
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_prefix_path_lib = strdup(getenv("E_LIB_DIR"));
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else
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{
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snprintf(buf, sizeof(buf), "%s/lib", _prefix_path);
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_prefix_path_lib = strdup(buf);
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e_util_env_set("E_LIB_DIR", _prefix_path_lib);
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}
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if (getenv("E_DATA_DIR"))
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{
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_prefix_path_data = strdup(getenv("E_DATA_DIR"));
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_prefix_path_data_len = strlen(_prefix_path_data);
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}
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else
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{
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_prefix_path_data_len = snprintf(buf, sizeof(buf), "%s/"SHARE_D, _prefix_path);
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_prefix_path_data = strdup(buf);
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e_util_env_set("E_DATA_DIR", _prefix_path_data);
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}
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if (getenv("E_LOCALE_DIR"))
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_prefix_path_locale = strdup(getenv("E_LOCALE_DIR"));
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else
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{
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snprintf(buf, sizeof(buf), "%s/"LOCALE_D, _prefix_path);
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_prefix_path_locale = strdup(buf);
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e_util_env_set("E_LOCALE_DIR", _prefix_path_locale);
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}
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return 1;
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}
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/* no env var - examine process and possible argv0 */
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if (!_e_prefix_try_proc())
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{
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if (!_e_prefix_try_argv(argv0))
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{
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e_prefix_fallback();
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e_util_env_set("E_PREFIX", _prefix_path);
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e_util_env_set("E_BIN_DIR", _prefix_path_bin);
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e_util_env_set("E_LIB_DIR", _prefix_path_lib);
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e_util_env_set("E_DATA_DIR", _prefix_path_data);
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return 0;
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}
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}
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/* _exe_path is now a full absolute path TO this exe - figure out rest */
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/* if
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* exe = /blah/whatever/bin/exe
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* then
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* prefix = /blah/whatever
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* bin_dir = /blah/whatever/bin
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* data_dir = /blah/whatever/share/enlightenment
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* locale_dir = /blah/whatever/share/locale
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* lib_dir = /blah/whatever/lib
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*/
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p = strrchr(_exe_path, '/');
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if (p)
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{
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p--;
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while (p >= _exe_path)
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{
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if (*p == '/')
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{
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_prefix_path = malloc(p - _exe_path + 1);
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if (_prefix_path)
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{
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eina_strlcpy(_prefix_path, _exe_path, p - _exe_path + 1);
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/* bin and lib always together */
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snprintf(buf, sizeof(buf), "%s/bin", _prefix_path);
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_prefix_path_bin = strdup(buf);
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snprintf(buf, sizeof(buf), "%s/lib", _prefix_path);
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_prefix_path_lib = strdup(buf);
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printf("DYNAMIC DETERMINED PREFIX: %s\n", _prefix_path);
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/* check if AUTHORS file is there - then our guess is right */
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snprintf(buf, sizeof(buf), "%s/"MAGIC_DAT, _prefix_path);
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if (ecore_file_exists(buf))
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{
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_prefix_path_data_len = snprintf(buf, sizeof(buf), "%s/"SHARE_D, _prefix_path);
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_prefix_path_data = strdup(buf);
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snprintf(buf, sizeof(buf), "%s/"LOCALE_D, _prefix_path);
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_prefix_path_locale = strdup(buf);
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}
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/* AUTHORS file not there. time to start hunting! */
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else
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{
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if (_e_prefix_share_hunt())
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{
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printf("DIFFERENT DYNAMIC DETERMINED DATA DIR: %s\n", _prefix_path_data);
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printf("DIFFERENT DYNAMIC DETERMINED LOCALE DIR: %s\n", _prefix_path_locale);
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}
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else
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{
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e_prefix_fallback();
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e_util_env_set("E_PREFIX", _prefix_path);
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e_util_env_set("E_BIN_DIR", _prefix_path_bin);
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e_util_env_set("E_LIB_DIR", _prefix_path_lib);
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e_util_env_set("E_DATA_DIR", _prefix_path_data);
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return 0;
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}
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}
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e_util_env_set("E_PREFIX", _prefix_path);
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e_util_env_set("E_BIN_DIR", _prefix_path_bin);
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e_util_env_set("E_LIB_DIR", _prefix_path_lib);
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e_util_env_set("E_DATA_DIR", _prefix_path_data);
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return 1;
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}
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else
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{
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e_prefix_fallback();
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e_util_env_set("E_PREFIX", _prefix_path);
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e_util_env_set("E_BIN_DIR", _prefix_path_bin);
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e_util_env_set("E_LIB_DIR", _prefix_path_lib);
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e_util_env_set("E_DATA_DIR", _prefix_path_data);
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return 0;
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}
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}
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p--;
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}
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}
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e_prefix_fallback();
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e_util_env_set("E_PREFIX", _prefix_path);
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e_util_env_set("E_BIN_DIR", _prefix_path_bin);
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e_util_env_set("E_LIB_DIR", _prefix_path_lib);
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e_util_env_set("E_DATA_DIR", _prefix_path_data);
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return 0;
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printf("=================================\n");
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printf("Enlightenment relocation handling\n");
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printf("=================================\n");
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printf("PREFIX: %s\n", eina_prefix_get(pfx));
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printf("BINDIR: %s\n", eina_prefix_bin_get(pfx));
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printf("LIBDIR: %s\n", eina_prefix_lib_get(pfx));
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printf("DATADIR: %s\n", eina_prefix_data_get(pfx));
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printf("LOCALE: %s\n", eina_prefix_locale_get(pfx));
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printf("=================================\n");
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e_util_env_set("E_PREFIX", eina_prefix_get(pfx));
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e_util_env_set("E_BIN_DIR", eina_prefix_bin_get(pfx));
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e_util_env_set("E_LIB_DIR", eina_prefix_lib_get(pfx));
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e_util_env_set("E_DATA_DIR", eina_prefix_data_get(pfx));
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e_util_env_set("E_LOCALE_DIR", eina_prefix_locale_get(pfx));
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return 1;
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}
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EINTERN void
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e_prefix_shutdown(void)
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{
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E_FREE(_exe_path);
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E_FREE(_prefix_path);
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E_FREE(_prefix_path_locale);
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E_FREE(_prefix_path_bin);
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E_FREE(_prefix_path_data);
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E_FREE(_prefix_path_lib);
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if (!pfx) return;
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_prefix_path_data = NULL;
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_prefix_path_data_len = 0;
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eina_prefix_free(pfx);
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pfx = NULL;
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}
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EAPI void
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e_prefix_fallback(void)
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{
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e_prefix_shutdown();
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_e_prefix_fallbacks();
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}
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EAPI const char *
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e_prefix_get(void)
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{
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return _prefix_path;
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return eina_prefix_get(pfx);
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}
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EAPI const char *
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e_prefix_locale_get(void)
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{
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return _prefix_path_locale;
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return eina_prefix_locale_get(pfx);
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}
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EAPI const char *
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e_prefix_bin_get(void)
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{
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return _prefix_path_bin;
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return eina_prefix_bin_get(pfx);
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}
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EAPI const char *
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e_prefix_data_get(void)
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{
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return _prefix_path_data;
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return eina_prefix_data_get(pfx);
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}
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EAPI const char *
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e_prefix_lib_get(void)
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{
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return _prefix_path_lib;
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return eina_prefix_lib_get(pfx);
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}
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/* local subsystem functions */
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static int
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_e_prefix_share_hunt(void)
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{
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char buf[4096], buf2[4096], *p;
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FILE *f;
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/* sometimes this isn't the case - so we need to do a more exhaustive search
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* through more parent and subdirs. hre is an example i have seen:
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*
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* /blah/whatever/exec/bin/exe
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* ->
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* /blah/whatever/exec/bin
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* /blah/whatever/common/share/enlightenment
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* /blah/whatever/common/share/locale
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* /blah/whatever/exec/lib
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*/
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/* this is pure black magic to try and find data shares */
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#ifdef PREFIX_CACHE_FILE
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/* 1. check cache file - as a first attempt. this will speed up subsequent
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* hunts - if needed */
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e_user_dir_concat_static(buf, "prefix_share_cache.txt");
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f = fopen(buf, "r");
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if (f)
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{
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if (fgets(buf2, sizeof(buf2), f))
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{
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int len;
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len = strlen(buf2);
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if (len > 1) buf2[len - 1] = 0;
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snprintf(buf, sizeof(buf), "%s/"MAGIC_FILE, buf2);
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if (ecore_file_exists(buf))
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{
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/* path is ok - magic file found */
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_prefix_path_data = strdup(buf2);
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_prefix_path_data_len = eina_strlcpy(buf, buf2, sizeof(buf));
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p = strrchr(buf, '/');
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if (p) *p = 0;
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snprintf(buf2, sizeof(buf2), "%s/locale", buf);
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_prefix_path_locale = strdup(buf2);
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fclose(f);
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return 1;
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}
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}
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fclose(f);
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}
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#endif
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/* 2. cache file doesn't exist or is invalid - we need to search - this is
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* where the real black magic begins */
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/* BLACK MAGIC 1:
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* /blah/whatever/dir1/bin
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* /blah/whatever/dir2/share/enlightenment
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*/
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if (!_prefix_path_data)
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{
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Eina_List *files;
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Eina_List *l;
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eina_strlcpy(buf, _prefix_path, sizeof(buf));
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p = strrchr(buf, '/');
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if (p) *p = 0;
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files = ecore_file_ls(buf);
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if (files)
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{
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char *file;
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EINA_LIST_FOREACH(files, l, file)
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{
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snprintf(buf2, sizeof(buf2), "%s/%s/"MAGIC_DAT, buf, file);
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if (ecore_file_exists(buf2))
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{
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_prefix_path_data_len = snprintf(buf2, sizeof(buf2), "%s/%s/"SHARE_D, buf, file);
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_prefix_path_data = strdup(buf2);
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snprintf(buf2, sizeof(buf2), "%s/%s/"LOCALE_D, buf, file);
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_prefix_path_locale = strdup(buf2);
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break;
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}
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}
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EINA_LIST_FREE(files, p)
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{
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free(p);
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}
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}
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}
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/* BLACK MAGIC 2:
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* /blah/whatever/dir1/bin
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* /blah/whatever/share/enlightenment
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*/
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if (!_prefix_path_data)
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{
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eina_strlcpy(buf, _prefix_path, sizeof(buf));
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p = strrchr(buf, '/');
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if (p) *p = 0;
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snprintf(buf2, sizeof(buf2), "%s/"MAGIC_DAT, buf);
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if (ecore_file_exists(buf2))
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{
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_prefix_path_data_len = snprintf(buf2, sizeof(buf2), "%s/"SHARE_D, buf);
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_prefix_path_data = strdup(buf2);
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snprintf(buf2, sizeof(buf2), "%s/"LOCALE_D, buf);
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_prefix_path_locale = strdup(buf2);
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}
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}
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/* add more black magic as required as we discover weridnesss - remember
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* this is to save users having to set environment variables to tell
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* e where it lives, so e auto-adapts. so these code snippets are just
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* logic to figure that out for the user
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*/
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/* done. we found it - write cache file */
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if (_prefix_path_data)
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{
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#ifdef PREFIX_CACHE_FILE
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ecore_file_mkpath(e_user_dir_get());
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e_user_dir_concat_static(buf, "prefix_share_cache.txt");
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f = fopen(buf, "w");
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if (f)
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{
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fprintf(f, "%s\n", _prefix_path_data);
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fclose(f);
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}
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#endif
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return 1;
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}
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/* fail. everything failed */
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return 0;
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}
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static int
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_e_prefix_fallbacks(void)
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{
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char *p;
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_prefix_path = strdup(PACKAGE_BIN_DIR);
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p = strrchr(_prefix_path, '/');
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if (p) *p = 0;
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_prefix_path_locale = strdup(LOCALE_DIR);
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_prefix_path_bin = strdup(PACKAGE_BIN_DIR);
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_prefix_path_data = strdup(PACKAGE_DATA_DIR);
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_prefix_path_data_len = strlen(_prefix_path_data);
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_prefix_path_lib = strdup(PACKAGE_LIB_DIR);
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printf("WARNING: Enlightenment could not determine its installed prefix\n"
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" and is falling back on the compiled in default:\n"
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" %s\n"
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" You might like to try setting the following environment variables:\n"
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" E_PREFIX - points to the base prefix of install\n"
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" E_BIN_DIR - optional in addition to E_PREFIX to provide\n"
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" a more specific binary directory\n"
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" E_LIB_DIR - optional in addition to E_PREFIX to provide\n"
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" a more specific library dir\n"
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" E_DATA_DIR - optional in addition to E_PREFIX to provide\n"
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" a more specific location for shared data\n"
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" E_LOCALE_DIR - optional in addition to E_PREFIX to provide\n"
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" a more specific location for locale data\n"
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,
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||||
_prefix_path);
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int
|
||||
_e_prefix_try_proc(void)
|
||||
{
|
||||
FILE *f;
|
||||
char buf[4096];
|
||||
void *func = NULL;
|
||||
|
||||
func = (void *)_e_prefix_try_proc;
|
||||
f = fopen("/proc/self/maps", "r");
|
||||
if (!f) return 0;
|
||||
while (fgets(buf, sizeof(buf), f))
|
||||
{
|
||||
int len;
|
||||
char *p, mode[5] = "";
|
||||
unsigned long ptr1 = 0, ptr2 = 0;
|
||||
|
||||
len = strlen(buf);
|
||||
if (buf[len - 1] == '\n')
|
||||
{
|
||||
buf[len - 1] = 0;
|
||||
len--;
|
||||
}
|
||||
if (sscanf(buf, "%lx-%lx %4s", &ptr1, &ptr2, mode) == 3)
|
||||
{
|
||||
if (!strcmp(mode, "r-xp"))
|
||||
{
|
||||
if (((void *)ptr1 <= func) && (func < (void *)ptr2))
|
||||
{
|
||||
p = strchr(buf, '/');
|
||||
if (p)
|
||||
{
|
||||
if (len > 10)
|
||||
{
|
||||
if (!strcmp(buf + len - 10, " (deleted)"))
|
||||
buf[len - 10] = 0;
|
||||
}
|
||||
_exe_path = strdup(p);
|
||||
fclose(f);
|
||||
return 1;
|
||||
}
|
||||
else
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
fclose(f);
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int
|
||||
_e_prefix_try_argv(char *argv0)
|
||||
{
|
||||
char *path, *p, *cp, *s;
|
||||
int len, lenexe;
|
||||
char buf[4096], buf2[4096], buf3[4096];
|
||||
|
||||
/* 1. is argv0 abs path? */
|
||||
if (argv0[0] == '/')
|
||||
{
|
||||
_exe_path = strdup(argv0);
|
||||
if (access(_exe_path, X_OK) == 0) return 1;
|
||||
free(_exe_path);
|
||||
_exe_path = NULL;
|
||||
return 0;
|
||||
}
|
||||
/* 2. relative path */
|
||||
if (strchr(argv0, '/'))
|
||||
{
|
||||
if (getcwd(buf3, sizeof(buf3)))
|
||||
{
|
||||
snprintf(buf2, sizeof(buf2), "%s/%s", buf3, argv0);
|
||||
if (realpath(buf2, buf))
|
||||
{
|
||||
_exe_path = strdup(buf);
|
||||
if (access(_exe_path, X_OK) == 0) return 1;
|
||||
free(_exe_path);
|
||||
_exe_path = NULL;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* 3. argv0 no path - look in PATH */
|
||||
path = getenv("PATH");
|
||||
if (!path) return 0;
|
||||
p = path;
|
||||
cp = p;
|
||||
lenexe = strlen(argv0);
|
||||
while ((p = strchr(cp, ':')))
|
||||
{
|
||||
len = p - cp;
|
||||
s = malloc(len + 1 + lenexe + 1);
|
||||
if (s)
|
||||
{
|
||||
strncpy(s, cp, len);
|
||||
s[len] = '/';
|
||||
strcpy(s + len + 1, argv0);
|
||||
if (realpath(s, buf))
|
||||
{
|
||||
if (access(buf, X_OK) == 0)
|
||||
{
|
||||
_exe_path = strdup(buf);
|
||||
free(s);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
free(s);
|
||||
}
|
||||
cp = p + 1;
|
||||
}
|
||||
len = strlen(cp);
|
||||
s = malloc(len + 1 + lenexe + 1);
|
||||
if (s)
|
||||
{
|
||||
strncpy(s, cp, len);
|
||||
s[len] = '/';
|
||||
strcpy(s + len + 1, argv0);
|
||||
if (realpath(s, buf))
|
||||
{
|
||||
if (access(buf, X_OK) == 0)
|
||||
{
|
||||
_exe_path = strdup(buf);
|
||||
free(s);
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
free(s);
|
||||
}
|
||||
/* 4. big problems. arg[0] != executable - weird execution */
|
||||
return 0;
|
||||
}
|
||||
|
||||
size_t
|
||||
EAPI size_t
|
||||
e_prefix_data_concat_len(char *dst, size_t size, const char *path, size_t path_len)
|
||||
{
|
||||
return eina_str_join_len(dst, size, '/', _prefix_path_data, _prefix_path_data_len, path, path_len);
|
||||
}
|
||||
|
||||
size_t
|
||||
EAPI size_t
|
||||
e_prefix_data_concat(char *dst, size_t size, const char *path)
|
||||
{
|
||||
return e_prefix_data_concat_len(dst, size, path, strlen(path));
|
||||
}
|
||||
|
||||
size_t
|
||||
EAPI size_t
|
||||
e_prefix_data_snprintf(char *dst, size_t size, const char *fmt, ...)
|
||||
{
|
||||
size_t off, ret;
|
||||
va_list ap;
|
||||
|
||||
|
||||
va_start(ap, fmt);
|
||||
|
||||
|
||||
off = _prefix_path_data_len + 1;
|
||||
if (size < _prefix_path_data_len + 2)
|
||||
{
|
||||
if (size > 1)
|
||||
{
|
||||
memcpy(dst, _prefix_path_data, size - 1);
|
||||
dst[size - 1] = '\0';
|
||||
}
|
||||
ret = off + vsnprintf(dst + off, size - off, fmt, ap);
|
||||
va_end(ap);
|
||||
return ret;
|
||||
if (size > 1)
|
||||
{
|
||||
memcpy(dst, _prefix_path_data, size - 1);
|
||||
dst[size - 1] = '\0';
|
||||
}
|
||||
ret = off + vsnprintf(dst + off, size - off, fmt, ap);
|
||||
va_end(ap);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
memcpy(dst, _prefix_path_data, _prefix_path_data_len);
|
||||
dst[_prefix_path_data_len] = '/';
|
||||
|
||||
|
||||
ret = off + vsnprintf(dst + off, size - off, fmt, ap);
|
||||
va_end(ap);
|
||||
return ret;
|
||||
|
|
|
@ -5,7 +5,7 @@
|
|||
#define E_PREFIX_H
|
||||
|
||||
EAPI int e_prefix_determine(char *argv0);
|
||||
EINTERN void e_prefix_shutdown(void);
|
||||
EINTERN void e_prefix_shutdown(void);
|
||||
EAPI void e_prefix_fallback(void);
|
||||
EAPI const char *e_prefix_get(void);
|
||||
EAPI const char *e_prefix_locale_get(void);
|
||||
|
|
Loading…
Reference in New Issue