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/* utils.h -- various utility routines
*
* This code is Copyright (c) 2017, by the authors of nmh. See the
* COPYRIGHT file in the root directory of the nmh distribution for
* complete copyright information. */
/* PLURALS gives a pointer to the string "s" when n isn't 1, and to the
* empty string "" when it is. Suitable for obtaining the plural `s'
* used for English nouns. It treats -1 as plural, as does GNU gettext.
* Having output vary for plurals is annoying for those writing parsers;
* better to phrase the output such that no test is needed, e.g.
* "messages found: 42". */
extern const char plurals[];
#define PLURALS(n) (plurals + ((n) == 1))
void *mh_xmalloc(size_t) MALLOC ALLOC_SIZE(1);
void *mh_xrealloc(void *, size_t) ALLOC_SIZE(2);
void *mh_xcalloc(size_t, size_t) MALLOC ALLOC_SIZE(1, 2);
char *mh_xstrdup(const char *) MALLOC;
void *xmemtostr(void const *src, size_t len) MALLOC; /* Can't use ALLOC_SIZE. */
/* Set p to point to newly allocated, uninitialised, memory. */
#define NEW(p) ((p) = mh_xmalloc(sizeof *(p)))
/* Set p to point to newly allocated, zeroed, memory. */
#define NEW0(p) ((p) = mh_xcalloc(1, sizeof *(p)))
/* Zero the bytes to which p points. */
#define ZERO(p) memset((p), 0, sizeof *(p))
char *pwd(void);
char *add(const char *, char *) MALLOC;
char *addlist(char *, const char *) MALLOC;
int folder_exists(const char *);
void create_folder(char *, int, void (*)(int));
int num_digits(int) PURE;
/*
* A vector of char array, used to hold a list of string message numbers
* or command arguments.
*/
struct msgs_array {
int max, size;
char **msgs;
};
void app_msgarg(struct msgs_array *, char *);
/*
* Same as msgs_array, but for a vector of ints
*/
struct msgnum_array {
int max, size;
int *msgnums;
};
void app_msgnum(struct msgnum_array *, int);
char *find_str(const char [], size_t, const char *) PURE;
char *rfind_str(const char [], size_t, const char *) PURE;
char *nmh_strcasestr(const char *, const char *) PURE;
void trunccpy(char *, const char *, size_t);
/* A convenience for the common case of dest being an array. */
#define TRUNCCPY(dest, src) trunccpy(dest, src, sizeof (dest))
void abortcpy(char *, const char *, size_t);
/* A convenience for the common case of dest being an array. */
#define ABORTCPY(dest, src) abortcpy(dest, src, sizeof (dest))
bool has_prefix(const char *, const char *) PURE;
bool has_suffix(const char *, const char *) PURE;
bool has_suffix_c(const char *, int) PURE;
void trim_suffix_c(char *, int);
void to_lower(char *);
void to_upper(char *);
int nmh_init(const char *, bool, bool);
int nmh_version_changed(int);
bool contains8bit(const char *, const char *);
int scan_input(int, bool *);
char *m_str(int);
char *m_strn(int, unsigned int);
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