Nils O. Selåsdal
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
#ifndef UC_DSTR_H_
|
|
#define UC_DSTR_H_
|
|
|
|
#include <stddef.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/** A dynamically managed C-string.
|
|
*
|
|
* The .str member might not always be nul terminated,
|
|
* Normally, use uc_dstr_str() to retreive the managed string
|
|
* instead of accessing ->str directly.
|
|
*/
|
|
struct DStr {
|
|
/** Length of the managed string.*/
|
|
size_t len;
|
|
|
|
//internal fields:
|
|
size_t allocated;
|
|
char *str;
|
|
};
|
|
|
|
#define UC_DSTR_STATIC_INIT {0, 0, NULL}
|
|
|
|
/** Initialize a DStr.
|
|
* Note that str->str will be NULL after initialization.
|
|
*
|
|
*/
|
|
void uc_dstr_init(struct DStr *str);
|
|
|
|
/** Destroy/free the string.
|
|
* (Does not free str itself, only the managed resource of the str)
|
|
*/
|
|
void uc_dstr_destroy(struct DStr *str);
|
|
|
|
/**
|
|
* @return the available/unused tail bytes in the string
|
|
*/
|
|
size_t uc_dstr_available(const struct DStr *str);
|
|
|
|
/** Ensure the DStr is of at least 'len' bytes,
|
|
* allocating room if needed.
|
|
*
|
|
* @return 0 on success (!= 0 if an allocation fail)
|
|
*/
|
|
int uc_dstr_ensure(struct DStr *str, size_t len);
|
|
|
|
/** Reset the DStr, setting its length to 0
|
|
*/
|
|
void uc_dstr_reset(struct DStr *str);
|
|
|
|
/** nul terminate the DStr */
|
|
void uc_dstr_terminate(struct DStr *str);
|
|
|
|
/** Retreive the managed string, the returned string
|
|
* is always nul terminated. The DStr will still be managing
|
|
* the returned char *.
|
|
*/
|
|
char *uc_dstr_str(struct DStr *str);
|
|
|
|
/** reserve len bytes for appending to the dstr
|
|
* you must fill in a string in the 0-len range of
|
|
* the returned pointer.
|
|
*
|
|
* @param len bytes to reseve
|
|
* @return poiinter to the start of the data to append
|
|
*/
|
|
char *uc_dstr_put(struct DStr *str, size_t len);
|
|
|
|
/** Append a string, filtering out characters.
|
|
* e.g. pass in the ctype.h isdigit as the is_x function
|
|
* to append only the digits in the supplied string.
|
|
*
|
|
* @param s string to append
|
|
* @param is_x ctype.h compatible function to use as a filter.
|
|
* @return number of chars appended
|
|
*/
|
|
size_t uc_dstr_put_str_filter(struct DStr *str, const char *s, int (*is_x)(int c));
|
|
|
|
/* Append a string of the give size.
|
|
* (The nul terminator is not appended)
|
|
*
|
|
* @param s string to append
|
|
* @param len bytes to append (not including the nul terminator)
|
|
* @return 0 on success (!= 0 if an allocation fail)
|
|
*/
|
|
int uc_dstr_put_str_sz(struct DStr *str, const char *s, size_t len);
|
|
|
|
/* Append a string.
|
|
* (The nul terminator is not appended)
|
|
* @return 0 on success (!= 0 if an allocation fail)
|
|
*/
|
|
int uc_dstr_put_str(struct DStr *str, const char *s);
|
|
|
|
/* Append a single char.
|
|
* @return 0 on success (!= 0 if an allocation fail)
|
|
*/
|
|
int uc_dstr_put_char(struct DStr *str, char c);
|
|
|
|
/* Make the DStr take ownership of the give dynamically allocated string.
|
|
* Any existing string in the DStr is freed.
|
|
*/
|
|
void uc_dstr_own(struct DStr *str, char *s);
|
|
|
|
/** Release the managed string.
|
|
* The caller is now responsible for managing/free'ing the returned string.
|
|
* The DStr is considered empty afterwards.
|
|
*
|
|
* @return The dynamically allocated string that was managed.
|
|
*/
|
|
char *uc_dstr_steal(struct DStr *str);
|
|
|
|
/** Swap the A and B dstr */
|
|
void uc_str_swap(struct DStr *a, struct DStr *b);
|
|
|
|
/** Replace all occurences in the DStr
|
|
*
|
|
* @param f char to find
|
|
* @param r char to replace with
|
|
*/
|
|
size_t uc_dstr_replace(struct DStr *str, char f, char r);
|
|
|
|
/** Remove leading and trailing spaces in the DStr
|
|
* Spaces are the ascii ones: " \t\r\v\t\n"
|
|
*/
|
|
void uc_dstr_trim(struct DStr *str);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|