Mercurial > hg > dmlib
view dmstring.c @ 510:43ea59887c69
Start work on making C64 formats encoding possible by changing DMDecodeOps
to DMEncDecOps and adding fields and op enums for custom encode functions, renaming,
etc. Split generic op sanity checking into a separate function in
preparation for its use in generic encoding function.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Mon, 19 Nov 2012 15:06:01 +0200 |
parents | 32250b436bca |
children | 2726d91e3409 |
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#include "dmlib.h" #include <stdarg.h> /* strdup with a NULL check */ char *dm_strdup(const char *s) { char *res; if (s == NULL) return NULL; if ((res = dmMalloc(strlen(s) + 1)) == NULL) return NULL; strcpy(res, s); return res; } /* Simulate a sprintf() that allocates memory */ char *dm_strdup_vprintf(const char *fmt, va_list args) { int size = 64; char *buf; if ((buf = dmMalloc(size)) == NULL) return NULL; while (1) { int n; va_list ap; va_copy(ap, args); n = vsnprintf(buf, size, fmt, ap); va_end(ap); if (n > -1 && n < size) return buf; if (n > -1) size = n + 1; else size *= 2; if ((buf = dmRealloc(buf, size)) == NULL) return NULL; } } char *dm_strdup_printf(const char *fmt, ...) { char *res; va_list ap; va_start(ap, fmt); res = dm_strdup_vprintf(fmt, ap); va_end(ap); return res; }