* Copyright (c) 2020-2021 Simon Marchi <simon.marchi@efficios.com>
*/
-#include <assert.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#define ARGPAR_ZALLOC(_type) ARGPAR_CALLOC(_type, 1)
-#define ARGPAR_ASSERT(_cond) assert(_cond)
-
-#ifdef __MINGW_PRINTF_FORMAT
-# define ARGPAR_PRINTF_FORMAT __MINGW_PRINTF_FORMAT
+#ifdef NDEBUG
+/*
+ * Force usage of the assertion condition to prevent unused variable warnings
+ * when `assert()` are disabled by the `NDEBUG` definition.
+ */
+# define ARGPAR_ASSERT(_cond) ((void) sizeof((void) (_cond), 0))
#else
-# define ARGPAR_PRINTF_FORMAT printf
+# include <assert.h>
+# define ARGPAR_ASSERT(_cond) assert(_cond)
#endif
/*
/* Parsing error */
struct argpar_error {
+ /* Error type */
+ enum argpar_error_type type;
+
/* Original argument index */
unsigned int orig_index;
return;
}
+/*
+ * Creates and returns an option parsing item for the descriptor `descr`
+ * and having the argument `arg` (copied; may be `NULL`).
+ *
+ * Returns `NULL` on memory error.
+ */
static
struct argpar_item_opt *create_opt_item(
const struct argpar_opt_descr * const descr,
return opt_item;
}
+/*
+ * Creates and returns a non-option parsing item for the original
+ * argument `arg` having the original index `orig_index` and the
+ * non-option index `non_opt_index`.
+ *
+ * Returns `NULL` on memory error.
+ */
static
struct argpar_item_non_opt *create_non_opt_item(const char * const arg,
const unsigned int orig_index,
*/
static
int set_error(struct argpar_error ** const error,
+ enum argpar_error_type type,
const char * const unknown_opt_name,
const struct argpar_opt_descr * const opt_descr,
const bool is_short)
goto error;
}
+ (*error)->type = type;
+
if (unknown_opt_name) {
(*error)->unknown_opt_name = ARGPAR_CALLOC(char,
- strlen(unknown_opt_name) + 1 + is_short ? 1 : 2);
+ strlen(unknown_opt_name) + 1 + (is_short ? 1 : 2));
if (!(*error)->unknown_opt_name) {
goto error;
}
return ret;
}
+ARGPAR_HIDDEN
+enum argpar_error_type argpar_error_type(
+ const struct argpar_error * const error)
+{
+ ARGPAR_ASSERT(error);
+ return error->type;
+}
+
ARGPAR_HIDDEN
unsigned int argpar_error_orig_index(const struct argpar_error * const error)
{
const struct argpar_error * const error)
{
ARGPAR_ASSERT(error);
+ ARGPAR_ASSERT(error->type == ARGPAR_ERROR_TYPE_UNKNOWN_OPT);
ARGPAR_ASSERT(error->unknown_opt_name);
return error->unknown_opt_name;
}
const struct argpar_error * const error, bool * const is_short)
{
ARGPAR_ASSERT(error);
+ ARGPAR_ASSERT(error->type == ARGPAR_ERROR_TYPE_MISSING_OPT_ARG ||
+ error->type == ARGPAR_ERROR_TYPE_UNEXPECTED_OPT_ARG);
ARGPAR_ASSERT(error->opt_descr);
if (is_short) {
}
}
+/*
+ * Finds and returns the _first_ descriptor having the short option name
+ * `short_name` or the long option name `long_name` within the option
+ * descriptors `descrs`.
+ *
+ * `short_name` may be `'\0'` to not consider it.
+ *
+ * `long_name` may be `NULL` to not consider it.
+ *
+ * Returns `NULL` if no descriptor is found.
+ */
static
const struct argpar_opt_descr *find_descr(
const struct argpar_opt_descr * const descrs,
return !descr->short_name && !descr->long_name ? NULL : descr;
}
+/* Return type of parse_short_opt_group() and parse_long_opt() */
enum parse_orig_arg_opt_ret {
PARSE_ORIG_ARG_OPT_RET_OK,
- PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT = -1,
- PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG = -2,
- PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG = -4,
- PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY = -5,
+ PARSE_ORIG_ARG_OPT_RET_ERROR = -1,
+ PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY = -2,
};
+/*
+ * Parses the short option group argument `short_opt_group`, starting
+ * where needed depending on the state of `iter`.
+ *
+ * On success, sets `*item`.
+ *
+ * On error (except for `PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY`), sets
+ * `*error`.
+ */
static
enum parse_orig_arg_opt_ret parse_short_opt_group(
const char * const short_opt_group,
const char unknown_opt_name[] =
{*iter->short_opt_group_ch, '\0'};
- ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT;
+ ret = PARSE_ORIG_ARG_OPT_RET_ERROR;
- if (set_error(error, unknown_opt_name, NULL, true)) {
+ if (set_error(error, ARGPAR_ERROR_TYPE_UNKNOWN_OPT,
+ unknown_opt_name, NULL, true)) {
ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY;
}
*/
if (!opt_arg || (iter->short_opt_group_ch[1] &&
strlen(opt_arg) == 0)) {
- ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG;
+ ret = PARSE_ORIG_ARG_OPT_RET_ERROR;
- if (set_error(error, NULL, descr, true)) {
+ if (set_error(error, ARGPAR_ERROR_TYPE_MISSING_OPT_ARG,
+ NULL, descr, true)) {
ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY;
}
return ret;
}
+/*
+ * Parses the long option argument `long_opt_arg`.
+ *
+ * On success, sets `*item`.
+ *
+ * On error (except for `PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY`), sets
+ * `*error`.
+ */
static
enum parse_orig_arg_opt_ret parse_long_opt(const char * const long_opt_arg,
const char * const next_orig_arg,
/* Find corresponding option descriptor */
descr = find_descr(descrs, '\0', long_opt_name);
if (!descr) {
- ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT;
+ ret = PARSE_ORIG_ARG_OPT_RET_ERROR;
- if (set_error(error, long_opt_name, NULL, false)) {
+ if (set_error(error, ARGPAR_ERROR_TYPE_UNKNOWN_OPT,
+ long_opt_name, NULL, false)) {
ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY;
}
} else {
/* `--long-opt arg` style */
if (!next_orig_arg) {
- ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG;
+ ret = PARSE_ORIG_ARG_OPT_RET_ERROR;
- if (set_error(error, NULL, descr, false)) {
+ if (set_error(error, ARGPAR_ERROR_TYPE_MISSING_OPT_ARG,
+ NULL, descr, false)) {
ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY;
}
* Unexpected `--opt=arg` style for a long option which
* doesn't accept an argument.
*/
- ret = PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG;
+ ret = PARSE_ORIG_ARG_OPT_RET_ERROR;
- if (set_error(error, NULL, descr, false)) {
+ if (set_error(error, ARGPAR_ERROR_TYPE_UNEXPECTED_OPT_ARG,
+ NULL, descr, false)) {
ret = PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY;
}
return ret;
}
+/*
+ * Parses the original argument `orig_arg`.
+ *
+ * On success, sets `*item`.
+ *
+ * On error (except for `PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY`), sets
+ * `*error`.
+ */
static
enum parse_orig_arg_opt_ret parse_orig_arg_opt(const char * const orig_arg,
const char * const next_orig_arg,
case PARSE_ORIG_ARG_OPT_RET_OK:
status = ARGPAR_ITER_NEXT_STATUS_OK;
break;
- case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT:
- case PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG:
- case PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG:
+ case PARSE_ORIG_ARG_OPT_RET_ERROR:
if (error) {
ARGPAR_ASSERT(*error);
(*nc_error)->orig_index = iter->i;
}
-
- switch (parse_orig_arg_opt_ret) {
- case PARSE_ORIG_ARG_OPT_RET_ERROR_UNKNOWN_OPT:
- status = ARGPAR_ITER_NEXT_STATUS_ERROR_UNKNOWN_OPT;
- break;
- case PARSE_ORIG_ARG_OPT_RET_ERROR_MISSING_OPT_ARG:
- status = ARGPAR_ITER_NEXT_STATUS_ERROR_MISSING_OPT_ARG;
- break;
- case PARSE_ORIG_ARG_OPT_RET_ERROR_UNEXPECTED_OPT_ARG:
- status = ARGPAR_ITER_NEXT_STATUS_ERROR_UNEXPECTED_OPT_ARG;
- break;
- default:
- abort();
- }
-
+ status = ARGPAR_ITER_NEXT_STATUS_ERROR;
break;
case PARSE_ORIG_ARG_OPT_RET_ERROR_MEMORY:
status = ARGPAR_ITER_NEXT_STATUS_ERROR_MEMORY;
projects / argpar.git / blobdiff