diff options
Diffstat (limited to 'json-c/printbuf.c')
| -rw-r--r-- | json-c/printbuf.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/json-c/printbuf.c b/json-c/printbuf.c deleted file mode 100644 index fe952b45..00000000 --- a/json-c/printbuf.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * $Id: printbuf.c,v 1.5 2006/01/26 02:16:28 mclark Exp $ - * - * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd. - * Michael Clark <michael@metaparadigm.com> - * - * This library is free software; you can redistribute it and/or modify - * it under the terms of the MIT license. See COPYING for details. - * - * - * Copyright (c) 2008-2009 Yahoo! Inc. All rights reserved. - * The copyrights to the contents of this file are licensed under the MIT License - * (http://www.opensource.org/licenses/mit-license.php) - */ - -#include "config.h" - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> - -#ifdef HAVE_STDARG_H -# include <stdarg.h> -#else /* !HAVE_STDARG_H */ -# error Not enough var arg support! -#endif /* HAVE_STDARG_H */ - -#include "debug.h" -#include "printbuf.h" - -static int printbuf_extend(struct printbuf *p, int min_size); - -struct printbuf* printbuf_new(void) -{ - struct printbuf *p; - - p = (struct printbuf*)calloc(1, sizeof(struct printbuf)); - if(!p) return NULL; - p->size = 32; - p->bpos = 0; - if(!(p->buf = (char*)malloc(p->size))) { - free(p); - return NULL; - } - return p; -} - - -/** - * Extend the buffer p so it has a size of at least min_size. - * - * If the current size is large enough, nothing is changed. - * - * Note: this does not check the available space! The caller - * is responsible for performing those calculations. - */ -static int printbuf_extend(struct printbuf *p, int min_size) -{ - char *t; - int new_size; - - if (p->size >= min_size) - return 0; - - new_size = p->size * 2; - if (new_size < min_size + 8) - new_size = min_size + 8; -#ifdef PRINTBUF_DEBUG - MC_DEBUG("printbuf_memappend: realloc " - "bpos=%d min_size=%d old_size=%d new_size=%d\n", - p->bpos, min_size, p->size, new_size); -#endif /* PRINTBUF_DEBUG */ - if(!(t = (char*)realloc(p->buf, new_size))) - return -1; - p->size = new_size; - p->buf = t; - return 0; -} - -int printbuf_memappend(struct printbuf *p, const char *buf, int size) -{ - if (p->size <= p->bpos + size + 1) { - if (printbuf_extend(p, p->bpos + size + 1) < 0) - return -1; - } - memcpy(p->buf + p->bpos, buf, size); - p->bpos += size; - p->buf[p->bpos]= '\0'; - return size; -} - -int printbuf_memset(struct printbuf *pb, int offset, int charvalue, int len) -{ - int size_needed; - - if (offset == -1) - offset = pb->bpos; - size_needed = offset + len; - if (pb->size < size_needed) - { - if (printbuf_extend(pb, size_needed) < 0) - return -1; - } - - memset(pb->buf + offset, charvalue, len); - if (pb->bpos < size_needed) - pb->bpos = size_needed; - - return 0; -} - -#if !defined(HAVE_VSNPRINTF) && defined(_MSC_VER) -# define vsnprintf _vsnprintf -#elif !defined(HAVE_VSNPRINTF) /* !HAVE_VSNPRINTF */ -# error Need vsnprintf! -#endif /* !HAVE_VSNPRINTF && defined(WIN32) */ - -#if !defined(HAVE_VASPRINTF) -/* CAW: compliant version of vasprintf */ -static int vasprintf(char **buf, const char *fmt, va_list ap) -{ -#ifndef WIN32 - static char _T_emptybuffer = '\0'; -#endif /* !defined(WIN32) */ - int chars; - char *b; - - if(!buf) { return -1; } - -#ifdef WIN32 - chars = _vscprintf(fmt, ap)+1; -#else /* !defined(WIN32) */ - /* CAW: RAWR! We have to hope to god here that vsnprintf doesn't overwrite - our buffer like on some 64bit sun systems.... but hey, its time to move on */ - chars = vsnprintf(&_T_emptybuffer, 0, fmt, ap)+1; - if(chars < 0) { chars *= -1; } /* CAW: old glibc versions have this problem */ -#endif /* defined(WIN32) */ - - b = (char*)malloc(sizeof(char)*chars); - if(!b) { return -1; } - - if((chars = vsprintf(b, fmt, ap)) < 0) - { - free(b); - } else { - *buf = b; - } - - return chars; -} -#endif /* !HAVE_VASPRINTF */ - -int sprintbuf(struct printbuf *p, const char *msg, ...) -{ - va_list ap; - char *t; - int size; - char buf[128]; - - /* user stack buffer first */ - va_start(ap, msg); - size = vsnprintf(buf, 128, msg, ap); - va_end(ap); - /* if string is greater than stack buffer, then use dynamic string - with vasprintf. Note: some implementation of vsnprintf return -1 - if output is truncated whereas some return the number of bytes that - would have been written - this code handles both cases. */ - if(size == -1 || size > 127) { - va_start(ap, msg); - if((size = vasprintf(&t, msg, ap)) < 0) { va_end(ap); return -1; } - va_end(ap); - printbuf_memappend(p, t, size); - free(t); - return size; - } else { - printbuf_memappend(p, buf, size); - return size; - } -} - -void printbuf_reset(struct printbuf *p) -{ - p->buf[0] = '\0'; - p->bpos = 0; -} - -void printbuf_free(struct printbuf *p) -{ - if(p) { - free(p->buf); - free(p); - } -} |