From 30b6a77f86a35dab16b3bf9b815e089657fc6890 Mon Sep 17 00:00:00 2001 From: Michał Cichoń Date: Tue, 1 May 2012 16:05:17 +0200 Subject: Update build environment to comply with latest pianobar requirements. Replace gcrypt with blowfist library - this will allow us to keep pianobar.exe portable. --- json-c/src/printbuf.c | 192 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 192 insertions(+) create mode 100644 json-c/src/printbuf.c (limited to 'json-c/src/printbuf.c') diff --git a/json-c/src/printbuf.c b/json-c/src/printbuf.c new file mode 100644 index 0000000..b951c7b --- /dev/null +++ b/json-c/src/printbuf.c @@ -0,0 +1,192 @@ +/* + * $Id: printbuf.c,v 1.5 2006/01/26 02:16:28 mclark Exp $ + * + * Copyright (c) 2004, 2005 Metaparadigm Pte. Ltd. + * Michael Clark + * + * 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 +#include +#include + +#if HAVE_STDARG_H +# include +#else /* !HAVE_STDARG_H */ +# error Not enough var arg support! +#endif /* HAVE_STDARG_H */ + +#include "bits.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 = json_max(p->size * 2, 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 !HAVE_VSNPRINTF && defined(_MSC_VER) +# define vsnprintf _vsnprintf +#elif !HAVE_VSNPRINTF /* !HAVE_VSNPRINTF */ +# error Need vsnprintf! +#endif /* !HAVE_VSNPRINTF && defined(WIN32) */ + +#if !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); + } +} -- cgit v1.2.3