X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=include%2Fbabeltrace%2Fcommon-internal.h;h=b6981b27a0125508fe79acd29a5ab8e575cedd6d;hb=85cd02cf3c1ded45ef8664ae3be7728ba1f05af6;hp=1beb9d9bf1cb5510b0f72bd11e5edad1503e1603;hpb=290725f719d3d1a8896b73334736d47c5c935040;p=babeltrace.git diff --git a/include/babeltrace/common-internal.h b/include/babeltrace/common-internal.h index 1beb9d9b..b6981b27 100644 --- a/include/babeltrace/common-internal.h +++ b/include/babeltrace/common-internal.h @@ -1,20 +1,76 @@ #ifndef BABELTRACE_COMMON_INTERNAL_H #define BABELTRACE_COMMON_INTERNAL_H +#include #include +#include +#define BT_COMMON_COLOR_RESET "\033[0m" +#define BT_COMMON_COLOR_BOLD "\033[1m" +#define BT_COMMON_COLOR_FG_DEFAULT "\033[39m" +#define BT_COMMON_COLOR_FG_RED "\033[31m" +#define BT_COMMON_COLOR_FG_GREEN "\033[32m" +#define BT_COMMON_COLOR_FG_YELLOW "\033[33m" +#define BT_COMMON_COLOR_FG_BLUE "\033[34m" +#define BT_COMMON_COLOR_FG_MAGENTA "\033[35m" +#define BT_COMMON_COLOR_FG_CYAN "\033[36m" +#define BT_COMMON_COLOR_FG_LIGHT_GRAY "\033[37m" +#define BT_COMMON_COLOR_BG_DEFAULT "\033[49m" +#define BT_COMMON_COLOR_BG_RED "\033[41m" +#define BT_COMMON_COLOR_BG_GREEN "\033[42m" +#define BT_COMMON_COLOR_BG_YELLOW "\033[43m" +#define BT_COMMON_COLOR_BG_BLUE "\033[44m" +#define BT_COMMON_COLOR_BG_MAGENTA "\033[45m" +#define BT_COMMON_COLOR_BG_CYAN "\033[46m" +#define BT_COMMON_COLOR_BG_LIGHT_GRAY "\033[47m" + +struct bt_common_lttng_live_url_parts { + GString *proto; + GString *hostname; + GString *target_hostname; + GString *session_name; + + /* -1 means default port */ + int port; +}; + +/* + * Checks if the current process has setuid or setgid access rights. + * Returns `true` if so. + */ BT_HIDDEN bool bt_common_is_setuid_setgid(void); +/* + * Returns the system-wide plugin path, e.g. + * `/usr/lib/babeltrace/plugins`. Do not free the return value. + */ BT_HIDDEN const char *bt_common_get_system_plugin_path(void); +/* + * Returns the user plugin path, e.g. + * `/home/user/.local/lib/babeltrace/plugins`. You need to free the + * return value. + */ BT_HIDDEN char *bt_common_get_home_plugin_path(void); +/* + * Appends the list of directories in `paths` to the array `dirs`. + * `paths` is a list of directories separated by `:`. Returns 0 on + * success. + */ BT_HIDDEN int bt_common_append_plugin_path_dirs(const char *paths, GPtrArray *dirs); +/* + * Returns `true` if terminal color codes are supported for this + * process. + */ +BT_HIDDEN +bool bt_common_colors_supported(void); + BT_HIDDEN const char *bt_common_color_reset(void); @@ -69,4 +125,152 @@ const char *bt_common_color_bg_cyan(void); BT_HIDDEN const char *bt_common_color_bg_light_gray(void); +/* + * Returns the substring from `input` to the first character found + * in the list of characters `end_chars`, unescaping any character + * found in `escapable_chars`, and sets `*end_pos` to the position of + * the end (from `input`). The caller owns the returned GString. + */ +BT_HIDDEN +GString *bt_common_string_until(const char *input, const char *escapable_chars, + const char *end_chars, size_t *end_pos); + +/* + * Returns the quoted version of `input` for a shell. If + * `with_single_quotes` is `true`, prepends and appends the `'` prefix + * and suffix to the returned string; otherwise the caller should + * prepend and append them manually, although they are not always + * required. The caller owns the returned GString. + */ +BT_HIDDEN +GString *bt_common_shell_quote(const char *input, bool with_single_quotes); + +/* + * Returns `true` if `input` is a string made only of printable + * characters. + */ +BT_HIDDEN +bool bt_common_string_is_printable(const char *input); + +/* + * Destroys the parts of an LTTng live URL as returned by + * bt_common_parse_lttng_live_url(). + */ +BT_HIDDEN +void bt_common_destroy_lttng_live_url_parts( + struct bt_common_lttng_live_url_parts *parts); + +/* + * Parses the LTTng live URL `url` and returns its different parts. + * If there's an error, writes the error message into `*error_buf` + * up to `error_buf_size` bytes. You must destroy the returned value + * with bt_common_destroy_lttng_live_url_parts(). + */ +BT_HIDDEN +struct bt_common_lttng_live_url_parts bt_common_parse_lttng_live_url( + const char *url, char *error_buf, size_t error_buf_size); + +/* + * Normalizes (in place) a star globbing pattern to be used with + * bt_common_star_glob_match(). This function always succeeds. + */ +BT_HIDDEN +void bt_common_normalize_star_glob_pattern(char *pattern); + +/* + * Returns `true` if `candidate` (of size `candidate_len`) matches + * the star globbing pattern `pattern` (of size `pattern_len`). + */ +BT_HIDDEN +bool bt_common_star_glob_match(const char *pattern, size_t pattern_len, + const char *candidate, size_t candidate_len); + +/* + * Normalizes the path `path`: + * + * * If it's a relative path, converts it to an absolute path using + * `wd` as the working directory (or the current working directory + * if `wd` is NULL). + * * Removes consecutive and trailing slashes. + * * Resolves `..` and `.` in the path (both in `path` and in `wd`). + * * Does NOT resolve symbolic links. + * + * The caller owns the returned GString. + */ +BT_HIDDEN +GString *bt_common_normalize_path(const char *path, const char *wd); + +typedef void (* bt_common_handle_custom_specifier_func)(void *priv_data, + char **buf, size_t avail_size, const char **fmt, va_list *args); + +/* + * This is a custom vsnprintf() which handles the standard conversion + * specifier as well as custom ones. + * + * `fmt` is a typical printf()-style format string, with the following + * limitations: + * + * * The `*` width specifier is not accepted. + * * The `*` precision specifier is not accepted. + * * The `j` and `t` length modifiers are not accepted. + * * The `n` format specifier is not accepted. + * * The format specifiers defined in are not accepted + * except for `PRId64`, `PRIu64`, `PRIx64`, `PRIX64`, `PRIo64`, and + * `PRIi64`. + * + * `intro` specifies which special character immediately following an + * introductory `%` character in `fmt` is used to indicate a custom + * conversion specifier. For example, if `intro` is '@', then any `%@` + * sequence in `fmt` is the beginning of a custom conversion specifier. + * + * When a custom conversion specifier is encountered in `fmt`, + * the function calls `handle_specifier`. This callback receives: + * + * `priv_data`: + * Custom, private data. + * + * `buf`: + * Address of the current buffer pointer. `*buf` is the position to + * append new data. The callback must update `*buf` when appending + * new data. The callback must ensure not to write passed the whole + * buffer passed to bt_common_custom_vsnprintf(). + * + * `avail_size`: + * Number of bytes left in whole buffer from the `*buf` point. + * + * `fmt`: + * Address of the current format string pointer. `*fmt` points to + * the introductory `%` character, which is followed by the + * character `intro`. The callback must update `*fmt` so that it + * points after the whole custom conversion specifier. + * + * `args`: + * Variable argument list. Use va_arg() to get new arguments from + * this list and update it at the same time. + * + * Because this is an internal utility, this function and its callback + * do not return error codes: they abort when there's any error (bad + * format string, for example). + */ +BT_HIDDEN +void bt_common_custom_vsnprintf(char *buf, size_t buf_size, + char intro, + bt_common_handle_custom_specifier_func handle_specifier, + void *priv_data, const char *fmt, va_list *args); + +/* + * Variadic form of bt_common_custom_vsnprintf(). + */ +BT_HIDDEN +void bt_common_custom_snprintf(char *buf, size_t buf_size, + char intro, + bt_common_handle_custom_specifier_func handle_specifier, + void *priv_data, const char *fmt, ...); + +/* + * Returns the system page size. + */ +BT_HIDDEN +size_t bt_common_get_page_size(void); + #endif /* BABELTRACE_COMMON_INTERNAL_H */