diff options
| -rw-r--r-- | text.c | 18 | ||||
| -rw-r--r-- | text.h | 3 |
2 files changed, 21 insertions, 0 deletions
@@ -634,6 +634,24 @@ bool text_insert(Text *txt, size_t pos, const char *data, size_t len) { return true; } +bool text_printf(Text *txt, size_t pos, const char *format, ...) { + va_list ap; + va_start(ap, format); + bool ret = text_vprintf(txt, pos, format, ap); + va_end(ap); + return ret; +} + +bool text_vprintf(Text *txt, size_t pos, const char *format, va_list ap) { + int len = vsnprintf(NULL, 0, format, ap); + if (len == -1) + return false; + char *buf = malloc(len+1); + bool ret = buf && (vsnprintf(buf, len+1, format, ap) == len) && text_insert(txt, pos, buf, len); + free(buf); + return ret; +} + static size_t action_undo(Text *txt, Action *a) { size_t pos = EPOS; for (Change *c = a->change; c; c = c->next) { @@ -4,6 +4,7 @@ #include <stdbool.h> #include <time.h> #include <unistd.h> +#include <stdarg.h> #include <sys/types.h> #include <sys/stat.h> @@ -36,6 +37,8 @@ typedef struct { Text *text_load(const char *filename); /* file information at time of load or last save */ struct stat text_stat(Text*); +bool text_printf(Text*, size_t pos, const char *format, ...); +bool text_vprintf(Text*, size_t pos, const char *format, va_list ap); /* insert `len' bytes starting from `data' at `pos' which has to be * in the interval [0, text_size(txt)] */ bool text_insert(Text*, size_t pos, const char *data, size_t len); |