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#ifndef STRING_UTILS_H_
#define STRING_UTILS_H_
#include "xdvi-config.h"
#include <stdarg.h>
#include "my-vsnprintf.h"
extern Boolean str_is_prefix(const char *, const char *, Boolean case_sensitive);
extern Boolean str_is_suffix(const char *, const char *, Boolean case_sensitive);
extern Boolean is_spaces_only(const char *);
extern char *my_stristr(const char *haystack, const char *needle);
typedef enum { USE_DVI_PATH, USE_CWD_PATH } expandPathTypeT;
/* remove `file:[//localhost/]' prefix from filename, and append `.dvi'
extension if no extension is present */
extern char *filename_append_dvi(const char *fname);
/* prepend a path of type `type' (either CWD, or directory of dvi file)
to `fname' */
extern char *expand_filename(const char *fname, expandPathTypeT type);
/* do both of the above */
extern char *expand_filename_append_dvi(const char *fname, expandPathTypeT type, Boolean must_exist);
/* normalize `../' `./' `//' from path */
extern char *canonicalize_path(const char *path);
extern char *format_arg(const char *fmt, const char *arg, int *match);
extern char *escape_format_arg(const char *arg);
extern char *unquote_arg(const char *fmt, const char *arg, int *match, int *len);
extern char *get_dir_component(const char *path);
extern char **get_separated_list(const char *source, const char *sep, Boolean do_unquote);
extern const char *find_format_str(const char *input, const char *fmt);
extern Boolean src_compare(const char *src, int src_len, const char *target, const char *path, size_t path_len);
extern char *shell_escape_string(const char *str);
extern void replace_extension(const char *fname, const char *extension, char *buf, size_t name_len);
extern const char *get_extension(const char *fname);
extern int length_of_int(int n);
extern char *get_string_va(const char *fmt, ...);
extern double my_atof(const char *str);
/*
* Print `fmt' to a dynamically allocated string `buf'. Uses VSNPRINTF
* in a way that should work with all of glibc <= 2.0.6, >= 2.1, and
* the implementation in my-vsnprintf.c. We cannot invoke va_start()/va_end()
* in a wrapper function since we may need to invoke vsnprintf() several
* times, and each call invalidates argp; that's why this is a macro ...
*/
#define XDVI_GET_STRING_ARGP(buf, fmt) \
do { \
va_list argp; \
int CHUNK_LEN = 128; \
int curr_len = CHUNK_LEN, need_len; \
\
buf = NULL; \
\
for (;;) { \
/* see man page for vsnprintf: for glibc 2.0, <need_len> is */ \
/* -1 if <buf> had been trucated to <curr_len>; for glibc 2.1, */ \
/* it's the total length of <fmt>; so the following works */ \
/* with both versions: */ \
buf = xrealloc(buf, curr_len); \
\
va_start(argp, fmt); \
need_len = VSNPRINTF(buf, curr_len, fmt, argp); \
va_end(argp); \
\
if (need_len > -1 && need_len < curr_len) { /* <curr_len> was large enough */ \
break; \
} \
if (need_len > -1) { /* now need_len + 1 is the exact space needed */ \
curr_len = need_len + 1; \
} \
else { /* try again with larger <len> */ \
curr_len += CHUNK_LEN; \
} \
} \
} while (0) \
#endif /* STRING_UTILS_H_ */
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