From 3c5db5339454f48edb48c9b1498c1832c6711eb1 Mon Sep 17 00:00:00 2001 From: Vito Caputo Date: Mon, 26 Jun 2023 17:19:35 -0700 Subject: til_str: exclude \0 from res_len for til_str_buf()/til_str_to_buf() It's more ergonomic more often to behave consistently with strlen() here, plus it's just the established mental model. While here I made til_settings_path_as_buf() private as nothing external uses it, it's essentially just a logically distinct private helper function from the public wrappers around it. Dragged into this changeset due to clarifying some naming/semantics as it's one of the few til_str_to_buf() callers. But nobody was actually passing a non-NULL res_bufsz/res_len to it anyways, as its use is minimal. --- src/til_settings.c | 8 ++++++-- src/til_settings.h | 1 - src/til_setup.c | 6 +++--- src/til_str.c | 5 +++-- 4 files changed, 12 insertions(+), 8 deletions(-) (limited to 'src') diff --git a/src/til_settings.c b/src/til_settings.c index 2985635..fb71bf7 100644 --- a/src/til_settings.c +++ b/src/til_settings.c @@ -679,7 +679,11 @@ int til_settings_strprint_path(const til_settings_t *settings, til_str_t *str) } -int til_settings_path_as_buf(const til_settings_t *settings, char **res_buf, size_t *res_bufsz) +/* + * returns a raw path to settings in *res_buf + * if res_len is provided, the returned string length excluding nul is stored there (til_str_to_buf()) + */ +static int til_settings_path_as_buf(const til_settings_t *settings, char **res_buf, size_t *res_len) { til_str_t *str; int r; @@ -695,7 +699,7 @@ int til_settings_path_as_buf(const til_settings_t *settings, char **res_buf, siz if (r < 0) return r; - *res_buf = til_str_to_buf(str, res_bufsz); + *res_buf = til_str_to_buf(str, res_len); return 0; } diff --git a/src/til_settings.h b/src/til_settings.h index 43bbee1..8cdaf88 100644 --- a/src/til_settings.h +++ b/src/til_settings.h @@ -62,7 +62,6 @@ int til_setting_desc_fprint_path(const til_setting_desc_t *desc, FILE *out); int til_setting_spec_check(const til_setting_spec_t *spec, const char *value); int til_settings_label_setting(const til_settings_t *settings, const til_setting_t *setting, char **res_label); int til_settings_strprint_path(const til_settings_t *settings, til_str_t *str); -int til_settings_path_as_buf(const til_settings_t *settings, char **res_buf, size_t *res_bufsz); int til_settings_fprint_path(const til_settings_t *settings, FILE *out); #ifndef TIL_SETTINGS_STR diff --git a/src/til_setup.c b/src/til_setup.c index 23827f3..bd57073 100644 --- a/src/til_setup.c +++ b/src/til_setup.c @@ -25,7 +25,7 @@ void * til_setup_new(const til_settings_t *settings, size_t size, void (*free_func)(til_setup_t *setup)) { char *path_buf = NULL; - size_t path_sz; + size_t path_len; til_str_t *path_str; til_setup_t *setup; int r; @@ -41,7 +41,7 @@ void * til_setup_new(const til_settings_t *settings, size_t size, void (*free_fu if (r < 0) return til_str_free(path_str); - path_buf = til_str_to_buf(path_str, &path_sz); + path_buf = til_str_to_buf(path_str, &path_len); setup = calloc(1, size); if (!setup) { @@ -50,7 +50,7 @@ void * til_setup_new(const til_settings_t *settings, size_t size, void (*free_fu } setup->path = path_buf; - setup->path_hash = til_jenkins((uint8_t *)path_buf, path_sz); + setup->path_hash = til_jenkins((uint8_t *)path_buf, path_len + 1 /* include the \0 */); setup->refcount = 1; setup->free = free_func; diff --git a/src/til_str.c b/src/til_str.c index fa256d7..6b85556 100644 --- a/src/til_str.c +++ b/src/til_str.c @@ -152,13 +152,14 @@ char * til_str_strdup(const til_str_t *str) /* a valid \0-terminated string is _always_ maintained @ str->buf so callers can just use it as a string.. * but must not hang onto that pointer across more til_str() calls on the same str. + * The length (excluding the \0) is returned in res_len if non-NULL */ const char * til_str_buf(const til_str_t *str, size_t *res_len) { assert(str); if (res_len) - *res_len = str->size.used; + *res_len = str->size.used - 1; return str->buf; } @@ -172,7 +173,7 @@ char * til_str_to_buf(til_str_t *str, size_t *res_len) assert(str); if (res_len) - *res_len = str->size.used; + *res_len = str->size.used - 1; buf = str->buf; free(str); -- cgit v1.2.1