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Implement utility functions for dynamic strings

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Introduce support for strings which support concatenating the current
value with a printf-style formatted value, thereby growing in size
dynamically.

Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
This commit is contained in:
Lukas Fleischer
2016-01-11 19:32:14 +01:00
parent 0b7614a4a7
commit 03d35bacf4
3 changed files with 129 additions and 0 deletions
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16
src/calcurse.h
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@@ -601,6 +601,13 @@ struct nbar {
pthread_mutex_t mutex;
};
/* Dynamic strings. */
struct string {
char *buf;
int bufsize;
int len;
};
/* Return codes for the getstring() function. */
enum getstr {
GETSTRING_VALID,
@@ -982,6 +989,15 @@ unsigned sigs_set_hdlr(int, void (*)(int));
void sigs_ignore(void);
void sigs_unignore(void);
/* strings.c */
void string_init(struct string *);
void string_reset(struct string *);
int string_grow(struct string *, int);
char *string_buf(struct string *);
int string_catf(struct string *, const char *, ...);
int string_vcatf(struct string *, const char *, va_list);
int string_printf(struct string *, const char *, ...);
/* todo.c */
extern llist_t todolist;
struct todo *todo_get_item(int);