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Functions | |
| char * | searchandreplace (const char *tosearch, const char *searchfor, const char *replacewith) |
| Read 'tosearch', replace all occurrences of 'searchfor' with 'replacewith' and return a pointer to the NEW string. More... | |
| const char * | get_env (const char *name, const char *envp[]) |
| Given an environmental variable name, search the envp array for its value. More... | |
| int | string_array_len (const char *array[]) |
| Return the length of a string array. More... | |
Function Documentation
◆ get_env()
| const char* get_env | ( | const char * | name, |
| const char * | envp[] | ||
| ) |
Given an environmental variable name, search the envp array for its value.
- Parameters
-
name Environment variable to look up envp Environment variable table with all key/value pairs
- Returns
- Returns a pointer to the value of the environment variable if found, otherwise NULL is returned.
◆ searchandreplace()
| char* searchandreplace | ( | const char * | tosearch, |
| const char * | searchfor, | ||
| const char * | replacewith | ||
| ) |
Read 'tosearch', replace all occurrences of 'searchfor' with 'replacewith' and return a pointer to the NEW string.
Does not modify the input strings. Will not enter an infinite loop with clever 'searchfor' and 'replacewith' strings.
- Parameters
-
tosearch haystack to search in searchfor needle to search for in the haystack replacewith when a match is found, replace needle with this string
- Returns
- Returns NULL when any parameter is NULL or the worst-case result is to large ( >= SIZE_MAX). Otherwise it returns a pointer to a new buffer containing the modified input
Definition at line 43 of file utils.c.
Referenced by my_conv(), pass_any_empty_string__returns_null(), pass_any_null_param__returns_null(), pattern_not_found__returns_original(), replace_longer_text__multiple_times__match_all_matches_are_replaced(), replace_single_char__multiple_times__match_all_matches_are_replaced(), and replace_single_char__one_time__match_is_replaced().
