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@@ -1,739 +0,0 @@
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-/** @file str.c
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- * @brief String related functions
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- *
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- * This file implements some often used string functions.
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- * Some functions are more portable versions of standard
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- * functions but others are original ones.
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- */
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-
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-#include <stdlib.h>
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-#include <string.h>
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-#include <assert.h>
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-#include <stdio.h>
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-#include <stdarg.h>
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-
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-#include "faux/ctype.h"
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-#include "faux/str.h"
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-
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-/* TODO: Are that vars really needed? */
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-//const char *lub_string_esc_default = "`|$<>&()#;\\\"!";
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-//const char *lub_string_esc_regex = "^$.*+[](){}";
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-//const char *lub_string_esc_quoted = "\\\"";
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-
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-
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-/** @brief Free the memory allocated for the string.
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- *
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- * Safely free the memory allocated for the string. You can use NULL
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- * pointer with this function. POSIX's free() checks for the NULL pointer
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- * but not all systems do so.
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- *
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- * @param [in] str String to free
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- */
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-void faux_str_free(char *str) {
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-
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- faux_free(str);
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-}
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-
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-
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-/** @brief Duplicates the string.
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- *
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- * Duplicates the string. Same as standard strdup() function. Allocates
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- * memory with malloc(). Checks for NULL pointer.
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- *
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- * @warning Resulting string must be freed by faux_str_free().
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- *
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- * @param [in] str String to duplicate.
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- * @return Pointer to allocated string or NULL.
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- */
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-char *faux_str_dup(const char *str) {
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-
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- if (!str)
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- return NULL;
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- return strdup(str);
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-}
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-
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-
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-/** @brief Duplicates the first n bytes of the string.
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- *
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- * Duplicates at most n bytes of the string. Allocates
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- * memory with malloc(). Checks for NULL pointer. Function will allocate
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- * n + 1 bytes to store string and terminating null byte.
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- *
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- * @warning Resulting string must be freed by faux_str_free().
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- *
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- * @param [in] str String to duplicate.
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- * @param [in] n Number of bytes to copy.
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- * @return Pointer to allocated string or NULL.
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- */
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-char *faux_str_dupn(const char *str, size_t n) {
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-
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- char *res = NULL;
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- size_t len = 0;
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-
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- if (!str)
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- return NULL;
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- len = strlen(str);
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- len = (len < n) ? len : n;
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- res = faux_zmalloc(len + 1);
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- if (!res)
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- return NULL;
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- strncpy(res, str, len);
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- res[len] = '\0';
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-
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- return res;
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-}
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-
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-
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-/** @brief Generates lowercase copy of input string.
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- *
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- * Allocates the copy of input string and convert that copy to lowercase.
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- *
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- * @warning Resulting string must be freed by faux_str_free().
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- *
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- * @param [in] str String to convert.
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- * @return Pointer to lowercase string copy or NULL.
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- */
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-char *faux_str_tolower(const char *str) {
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-
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- char *res = faux_str_dup(str);
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- char *p = res;
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-
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- if (!res)
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- return NULL;
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-
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- while (*p) {
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- *p = faux_ctype_tolower(*p);
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- p++;
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- }
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-
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- return res;
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-}
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-
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-
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-/** @brief Generates uppercase copy of input string.
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- *
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- * Allocates the copy of input string and convert that copy to uppercase.
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- *
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- * @warning Resulting string must be freed by faux_str_free().
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- *
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- * @param [in] str String to convert.
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- * @return Pointer to lowercase string copy or NULL.
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- */
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-char *faux_str_toupper(const char *str) {
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-
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- char *res = faux_str_dup(str);
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- char *p = res;
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-
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- if (!res)
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- return NULL;
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-
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- while (*p) {
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- *p = faux_ctype_toupper(*p);
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- p++;
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- }
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-
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- return res;
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-}
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-
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-
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-/** @brief Add n bytes of text to existent string.
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- *
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- * Concatenate two strings. Add n bytes of second string to the end of the
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- * first one. The first argument is address of string pointer. The pointer
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- * can be changed due to realloc() features. The first pointer can be NULL.
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- * In this case the memory will be malloc()-ed and stored to the first pointer.
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- *
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- * @param [in,out] str Address of first string pointer.
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- * @param [in] text Text to add to the first string.
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- * @param [in] n Number of bytes to add.
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- * @return Pointer to resulting string or NULL.
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- */
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-char *faux_str_catn(char **str, const char *text, size_t n) {
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-
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- size_t str_len = 0;
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- size_t text_len = 0;
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- char *res = NULL;
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- char *p = NULL;
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-
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- if (!text)
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- return *str;
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-
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- str_len = (*str) ? strlen(*str) : 0;
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- text_len = strlen(text);
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- text_len = (text_len < n) ? text_len : n;
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-
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- res = realloc(*str, str_len + text_len + 1);
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- if (!res)
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- return NULL;
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- p = res + str_len;
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- strncpy(p, text, text_len);
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- p[text_len] = '\0';
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- *str = res;
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-
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- return res;
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-}
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-
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-
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-/** @brief Add some text to existent string.
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- *
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- * Concatenate two strings. Add second string to the end of the first one.
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- * The first argument is address of string pointer. The pointer can be
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- * changed due to realloc() features. The first pointer can be NULL. In this
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- * case the memory will be malloc()-ed and stored to the first pointer.
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- *
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- * @param [in,out] str Address of first string pointer.
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- * @param [in] text Text to add to the first string.
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- * @return Pointer to resulting string or NULL.
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- */
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-char *faux_str_cat(char **str, const char *text) {
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-
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- size_t len = 0;
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-
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- if (!text)
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- return *str;
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- len = strlen(text);
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-
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- return faux_str_catn(str, text, len);
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-}
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-
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-/** @brief Add multiply text strings to existent string.
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- *
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- * Concatenate multiply strings. Add next string to the end of the previous one.
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- * The first argument is address of string pointer. The pointer can be
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- * changed due to realloc() features. The first pointer can be NULL. In this
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- * case the memory will be malloc()-ed and stored to the first pointer.
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- * The last argument must be 'NULL'. It marks the last argument within
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- * variable arguments list.
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- *
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- * @warning If last argument is not 'NULL' then behaviour is undefined.
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- *
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- * @param [in,out] str Address of first string pointer.
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- * @param [in] text Text to add to the first string.
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- * @return Pointer to resulting string or NULL.
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- */
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-char *faux_str_vcat(char **str, ...) {
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-
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- va_list ap;
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- const char *arg = NULL;
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- char *retval = *str;
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-
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- va_start(ap, str);
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- while ((arg = va_arg(ap, const char *))) {
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- retval = faux_str_cat(str, arg);
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- }
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- va_end(ap);
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-
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- return retval;
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-}
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-
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-
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-/** @brief Allocates memory and sprintf() to it.
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- *
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- * Function tries to find out necessary amount of memory for specified format
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- * string and arguments. Format is same as for sprintf() function. Then
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- * function allocates memory for resulting string and sprintf() to it. So
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- * user doesn't need to allocate buffer himself. Function returns allocated
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- * string that need to be freed by faux_str_free() function later.
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- *
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- * @warning The returned pointer must be free by faux_str_free().
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- *
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- * @param [in] fmt Format string like the sprintf()'s fmt.
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- * @param [in] arg Number of arguments.
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- * @return Allocated resulting string or NULL on error.
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- */
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-char *faux_str_sprintf(const char *fmt, ...) {
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-
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- int size = 1;
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- char calc_buf[1] = "";
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- char *line = NULL;
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- va_list ap;
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-
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- // Calculate buffer size
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- va_start(ap, fmt);
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- size = vsnprintf(calc_buf, size, fmt, ap);
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- va_end(ap);
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- // The snprintf() prior to 2.0.6 glibc version returns -1 if string
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- // was truncated. The later glibc returns required buffer size.
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- // The calc_buf can be NULL and size can be 0 for recent glibc but
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- // probably some exotic implementations can break on it. So use
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- // minimal buffer with length = 1.
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- if (size < 0)
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- return NULL;
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-
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- size++; // Additional byte for '\0'
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- line = faux_zmalloc(size);
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- if (!line) // Memory problems
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- return NULL;
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-
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- // Format real string
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- va_start(ap, fmt);
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- size = vsnprintf(line, size, fmt, ap);
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- va_end(ap);
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- if (size < 0) { // Some problems
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- faux_str_free(line);
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- return NULL;
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- }
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-
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- return line;
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-}
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-
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-
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-/** @brief Service function to compare to chars in right way.
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- *
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- * The problem is char type can be signed or unsigned on different
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- * platforms. So stright comparision can return different results.
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- *
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- * @param [in] char1 First char
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- * @param [in] char2 Second char
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- * @return
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- * < 0 if char1 < char2
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- * = 0 if char1 = char2
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- * > 0 if char1 > char2
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- */
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-static int faux_str_cmp_chars(char char1, char char2) {
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-
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- unsigned char ch1 = (unsigned char)char1;
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- unsigned char ch2 = (unsigned char)char2;
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-
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- return (int)ch1 - (int)ch2;
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-}
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-
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-
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-/** @brief Compare n first characters of two strings ignoring case.
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- *
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- * The difference beetween this function an standard strncasecmp() is
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- * faux function uses faux ctype functions. It can be important for
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- * portability.
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- *
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- * @param [in] str1 First string to compare.
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- * @param [in] str2 Second string to compare.
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- * @param [in] n Number of characters to compare.
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- * @return < 0, 0, > 0, see the strcasecmp().
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- */
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-int faux_str_casecmpn(const char *str1, const char *str2, size_t n) {
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-
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- const char *p1 = str1;
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- const char *p2 = str2;
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- size_t num = n;
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-
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- while (*p1 != '\0' && *p2 != '\0' && num != 0) {
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- int res = faux_str_cmp_chars(
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- faux_ctype_tolower(*p1), faux_ctype_tolower(*p2));
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- if (res != 0)
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- return res;
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- p1++;
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- p2++;
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- num--;
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- }
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-
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- if (0 == n) // It means n first characters are equal.
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- return 0;
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-
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- return faux_str_cmp_chars(
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- faux_ctype_tolower(*p1), faux_ctype_tolower(*p2));
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-}
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-
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-
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-/** @brief Compare two strings ignoring case.
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- *
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- * The difference beetween this function an standard strcasecmp() is
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- * faux function uses faux ctype functions. It can be important for
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- * portability.
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- *
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- * @param [in] str1 First string to compare.
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- * @param [in] str2 Second string to compare.
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- * @return < 0, 0, > 0, see the strcasecmp().
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- */
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-int faux_str_casecmp(const char *str1, const char *str2) {
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-
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- const char *p1 = str1;
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- const char *p2 = str2;
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-
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- while (*p1 != '\0' && *p2 != '\0') {
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- int res = faux_str_cmp_chars(
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- faux_ctype_tolower(*p1), faux_ctype_tolower(*p2));
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- if (res != 0)
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- return res;
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- p1++;
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- p2++;
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- }
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-
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- return faux_str_cmp_chars(
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- faux_ctype_tolower(*p1), faux_ctype_tolower(*p2));
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-}
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-
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-
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-/** @brief Finds the first occurrence of the substring in the string
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- *
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- * Function is a faux version of strcasestr() function.
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- *
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- * @param [in] haystack String to find substring in it.
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- * @param [in] needle Substring to find.
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- * @return
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- * Pointer to first occurence of substring in the string.
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- * NULL on error
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- */
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-char *faux_str_casestr(const char *haystack, const char *needle) {
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-
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- const char *ptr = haystack;
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- size_t ptr_len = 0;
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- size_t needle_len = 0;
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-
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- assert(haystack);
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- assert(needle);
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- if (!haystack || !needle)
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- return NULL;
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-
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- ptr_len = strlen(haystack);
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- needle_len = strlen(needle);
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-
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- while ((*ptr != '\0') && (ptr_len >= needle_len)) {
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- int res = faux_str_casecmpn(ptr, needle, needle_len);
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- if (0 == res)
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- return (char *)ptr;
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- ptr++;
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- ptr_len--;
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- }
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-
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- return NULL; // Not found
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-}
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-
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-
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-/** Prepare string for embedding to C-code (make escaping).
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- *
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- * @warning The returned pointer must be freed by faux_str_free().
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- * @param [in] src String for escaping.
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- * @return Escaped string or NULL on error.
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- */
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-char *faux_str_c_esc(const char *src) {
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-
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- const char *src_ptr = src;
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- char *dst = NULL;
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- char *dst_ptr = NULL;
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- char *escaped = NULL;
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- size_t src_len = 0;
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- size_t dst_len = 0;
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-
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- assert(src);
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- if (!src)
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- return NULL;
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-
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- src_len = strlen(src);
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- // Calculate max destination string size.
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- // The worst case is when each src character will be replaced by
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- // something like '\xff'. So it's 4 dst chars for 1 src one.
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- dst_len = (src_len * 4) + 1; // one byte for '\0'
|
|
|
- dst = faux_zmalloc(dst_len);
|
|
|
- assert(dst);
|
|
|
- if (!dst)
|
|
|
- return NULL;
|
|
|
- dst_ptr = dst;
|
|
|
-
|
|
|
- while (*src_ptr != '\0') {
|
|
|
- char *esc = NULL; // escaped replacement
|
|
|
- char buf[5]; // longest 'char' (4 bytes) + '\0'
|
|
|
- size_t len = 0;
|
|
|
-
|
|
|
- switch (*src_ptr) {
|
|
|
- case '\n':
|
|
|
- esc = "\\n";
|
|
|
- break;
|
|
|
- case '\"':
|
|
|
- esc = "\\\"";
|
|
|
- break;
|
|
|
- case '\\':
|
|
|
- esc = "\\\\";
|
|
|
- break;
|
|
|
- case '\'':
|
|
|
- esc = "\\\'";
|
|
|
- break;
|
|
|
- case '\r':
|
|
|
- esc = "\\r";
|
|
|
- break;
|
|
|
- case '\t':
|
|
|
- esc = "\\t";
|
|
|
- break;
|
|
|
- default:
|
|
|
- // Check is the symbol control character. Control
|
|
|
- // characters has codes from 0x00 to 0x1f.
|
|
|
- if (((unsigned char)*src_ptr & 0xe0) == 0) { // control
|
|
|
- snprintf(buf, sizeof(buf), "\\x%02x",
|
|
|
- (unsigned char)*src_ptr);
|
|
|
- buf[4] = '\0'; // for safety
|
|
|
- } else {
|
|
|
- buf[0] = *src_ptr; // Common character
|
|
|
- buf[1] = '\0';
|
|
|
- }
|
|
|
- esc = buf;
|
|
|
- break;
|
|
|
- }
|
|
|
-
|
|
|
- len = strlen(esc);
|
|
|
- memcpy(dst_ptr, esc, len); // zmalloc() nullify the rest
|
|
|
- dst_ptr += len;
|
|
|
- src_ptr++;
|
|
|
- }
|
|
|
-
|
|
|
- escaped = faux_str_dup(dst); // Free some memory
|
|
|
- faux_str_free(dst); // 'dst' size >= 'escaped' size
|
|
|
-
|
|
|
- return escaped;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/** @brief Search the n-th chars of string for one of the specified chars.
|
|
|
- *
|
|
|
- * The function search for any of specified characters within string.
|
|
|
- * The search is limited to first n characters of the string. If
|
|
|
- * terminating '\0' is before n-th character then search will stop on
|
|
|
- * it. Can be used with raw memory block.
|
|
|
- *
|
|
|
- * @param [in] str String (or memory block) to search in.
|
|
|
- * @param [in] chars_to_string Chars enumeration to search for.
|
|
|
- * @param [in] n Maximum number of bytes to search within.
|
|
|
- * @return Pointer to the first occurence of one of specified chars.
|
|
|
- * NULL on error.
|
|
|
- */
|
|
|
-char *faux_str_charsn(const char *str, const char *chars_to_search, size_t n) {
|
|
|
-
|
|
|
- const char *current_char = str;
|
|
|
- size_t len = n;
|
|
|
-
|
|
|
- assert(str);
|
|
|
- assert(chars_to_search);
|
|
|
- if (!str || !chars_to_search)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- while ((*current_char != '\0') && (len > 0)) {
|
|
|
- if (strchr(chars_to_search, *current_char))
|
|
|
- return (char *)current_char;
|
|
|
- current_char++;
|
|
|
- len--;
|
|
|
- }
|
|
|
-
|
|
|
- return NULL;
|
|
|
-}
|
|
|
-
|
|
|
-
|
|
|
-/** @brief Search string for one of the specified chars.
|
|
|
- *
|
|
|
- * The function search for any of specified characters within string.
|
|
|
- *
|
|
|
- * @param [in] str String to search in.
|
|
|
- * @param [in] chars_to_string Chars enumeration to search for.
|
|
|
- * @return Pointer to the first occurence of one of specified chars.
|
|
|
- * NULL on error.
|
|
|
- */
|
|
|
-char *faux_str_chars(const char *str, const char *chars_to_search) {
|
|
|
-
|
|
|
- assert(str);
|
|
|
- if (!str)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- return faux_str_charsn(str, chars_to_search, strlen(str));
|
|
|
-}
|
|
|
-
|
|
|
-/* TODO: If it nedeed?
|
|
|
-const char *faux_str_nextword(const char *string,
|
|
|
- size_t *len, size_t *offset, size_t *quoted)
|
|
|
-{
|
|
|
- const char *word;
|
|
|
-
|
|
|
- *quoted = 0;
|
|
|
-
|
|
|
- // Find the start of a word (not including an opening quote)
|
|
|
- while (*string && isspace(*string)) {
|
|
|
- string++;
|
|
|
- (*offset)++;
|
|
|
- }
|
|
|
- // Is this the start of a quoted string ?
|
|
|
- if (*string == '"') {
|
|
|
- *quoted = 1;
|
|
|
- string++;
|
|
|
- }
|
|
|
- word = string;
|
|
|
- *len = 0;
|
|
|
-
|
|
|
- // Find the end of the word
|
|
|
- while (*string) {
|
|
|
- if (*string == '\\') {
|
|
|
- string++;
|
|
|
- (*len)++;
|
|
|
- if (*string) {
|
|
|
- (*len)++;
|
|
|
- string++;
|
|
|
- }
|
|
|
- continue;
|
|
|
- }
|
|
|
- // End of word
|
|
|
- if (!*quoted && isspace(*string))
|
|
|
- break;
|
|
|
- if (*string == '"') {
|
|
|
- // End of a quoted string
|
|
|
- *quoted = 2;
|
|
|
- break;
|
|
|
- }
|
|
|
- (*len)++;
|
|
|
- string++;
|
|
|
- }
|
|
|
-
|
|
|
- return word;
|
|
|
-}
|
|
|
-*/
|
|
|
-
|
|
|
-// TODO: Is it needed?
|
|
|
-/*
|
|
|
-char *lub_string_ndecode(const char *string, unsigned int len)
|
|
|
-{
|
|
|
- const char *s = string;
|
|
|
- char *res, *p;
|
|
|
- int esc = 0;
|
|
|
-
|
|
|
- if (!string)
|
|
|
- return NULL;
|
|
|
-
|
|
|
- p = res = faux_zmalloc(len + 1);
|
|
|
-
|
|
|
- while (*s && (s < (string +len))) {
|
|
|
- if (!esc) {
|
|
|
- if ('\\' == *s)
|
|
|
- esc = 1;
|
|
|
- else
|
|
|
- *p = *s;
|
|
|
- } else {
|
|
|
-// switch (*s) {
|
|
|
-// case 'r':
|
|
|
-// case 'n':
|
|
|
-// *p = '\n';
|
|
|
-// break;
|
|
|
-// case 't':
|
|
|
-// *p = '\t';
|
|
|
-// break;
|
|
|
-// default:
|
|
|
-// *p = *s;
|
|
|
-// break;
|
|
|
-// }
|
|
|
-// *p = *s;
|
|
|
- esc = 0;
|
|
|
- }
|
|
|
- if (!esc)
|
|
|
- p++;
|
|
|
- s++;
|
|
|
- }
|
|
|
- *p = '\0';
|
|
|
-
|
|
|
- return res;
|
|
|
-}
|
|
|
-*/
|
|
|
-
|
|
|
-// TODO: Is it needed?
|
|
|
-/*
|
|
|
-inline char *lub_string_decode(const char *string)
|
|
|
-{
|
|
|
- return lub_string_ndecode(string, strlen(string));
|
|
|
-}
|
|
|
-*/
|
|
|
-
|
|
|
-// TODO: Is it needed?
|
|
|
-/*----------------------------------------------------------- */
|
|
|
-/*
|
|
|
- * This needs to escape any dangerous characters within the command line
|
|
|
- * to prevent gaining access to the underlying system shell.
|
|
|
- */
|
|
|
-/*
|
|
|
-char *lub_string_encode(const char *string, const char *escape_chars)
|
|
|
-{
|
|
|
- char *result = NULL;
|
|
|
- const char *p;
|
|
|
-
|
|
|
- if (!escape_chars)
|
|
|
- return lub_string_dup(string);
|
|
|
- if (string && !(*string)) // Empty string
|
|
|
- return lub_string_dup(string);
|
|
|
-
|
|
|
- for (p = string; p && *p; p++) {
|
|
|
- // find any special characters and prefix them with '\'
|
|
|
- size_t len = strcspn(p, escape_chars);
|
|
|
- lub_string_catn(&result, p, len);
|
|
|
- p += len;
|
|
|
- if (*p) {
|
|
|
- lub_string_catn(&result, "\\", 1);
|
|
|
- lub_string_catn(&result, p, 1);
|
|
|
- } else {
|
|
|
- break;
|
|
|
- }
|
|
|
- }
|
|
|
- return result;
|
|
|
-}
|
|
|
-*/
|
|
|
-
|
|
|
-
|
|
|
-// TODO: Is it needed?
|
|
|
-/*--------------------------------------------------------- */
|
|
|
-/*
|
|
|
-unsigned int lub_string_equal_part(const char *str1, const char *str2,
|
|
|
- bool_t utf8)
|
|
|
-{
|
|
|
- unsigned int cnt = 0;
|
|
|
-
|
|
|
- if (!str1 || !str2)
|
|
|
- return cnt;
|
|
|
- while (*str1 && *str2) {
|
|
|
- if (*str1 != *str2)
|
|
|
- break;
|
|
|
- cnt++;
|
|
|
- str1++;
|
|
|
- str2++;
|
|
|
- }
|
|
|
- if (!utf8)
|
|
|
- return cnt;
|
|
|
-
|
|
|
- // UTF8 features
|
|
|
- if (cnt && (UTF8_11 == (*(str1 - 1) & UTF8_MASK)))
|
|
|
- cnt--;
|
|
|
-
|
|
|
- return cnt;
|
|
|
-}
|
|
|
-*/
|
|
|
-
|
|
|
-// TODO: Is it needed?
|
|
|
-
|
|
|
-/*--------------------------------------------------------- */
|
|
|
-/*
|
|
|
-const char *lub_string_suffix(const char *string)
|
|
|
-{
|
|
|
- const char *p1, *p2;
|
|
|
- p1 = p2 = string;
|
|
|
- while (*p1) {
|
|
|
- if (faux_ctype_isspace(*p1)) {
|
|
|
- p2 = p1;
|
|
|
- p2++;
|
|
|
- }
|
|
|
- p1++;
|
|
|
- }
|
|
|
- return p2;
|
|
|
-}
|
|
|
-*/
|
|
|
-
|
|
|
-
|
|
|
-// TODO: Is it needed?
|
|
|
-/*--------------------------------------------------------- */
|
|
|
-/*
|
|
|
-unsigned int lub_string_wordcount(const char *line)
|
|
|
-{
|
|
|
- const char *word;
|
|
|
- unsigned int result = 0;
|
|
|
- size_t len = 0, offset = 0;
|
|
|
- size_t quoted;
|
|
|
-
|
|
|
- for (word = lub_string_nextword(line, &len, &offset, "ed);
|
|
|
- *word || quoted;
|
|
|
- word = lub_string_nextword(word + len, &len, &offset, "ed)) {
|
|
|
- // account for the terminating quotation mark
|
|
|
- len += quoted ? quoted - 1 : 0;
|
|
|
- result++;
|
|
|
- }
|
|
|
-
|
|
|
- return result;
|
|
|
-}
|
|
|
-*/
|