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Diffstat (limited to 'contrib/global/lib/strbuf.c')
| -rw-r--r-- | contrib/global/lib/strbuf.c | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/contrib/global/lib/strbuf.c b/contrib/global/lib/strbuf.c new file mode 100644 index 000000000000..3df14c9ee370 --- /dev/null +++ b/contrib/global/lib/strbuf.c @@ -0,0 +1,137 @@ +/* + * Copyright (c) 1996, 1997, 1998 Shigio Yamaguchi. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Shigio Yamaguchi. + * 4. Neither the name of the author nor the names of any co-contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * strbuf.c 5-Jul-98 + * + */ +#include <stdlib.h> +#include <string.h> + +#include "die.h" +#include "strbuf.h" + +/* + * usage: string buffer + * + * sb = stropen(); + * for (s = string; *s; s++) + * strputc(sb, *s); + * s = strvalue(sb); + * strstart(sb); + * strputs(sb, "hello"); + * s = strvalue(sb); + * strclose(sb); + */ +/* + * expandbuf: expand buffer so that afford to the length data at least. + * + * i) sb STRBUF structure + * i) length required room + */ +void +expandbuf(sb, length) +STRBUF *sb; +int length; +{ + int count = sb->curp - sb->sbuf; + + sb->sbufsize += (length > EXPANDSIZE) ? length : EXPANDSIZE; + if (!(sb->sbuf = (char *)realloc(sb->sbuf, sb->sbufsize + 1))) + die("short of memory."); + sb->curp = sb->sbuf + count; + sb->endp = sb->sbuf + sb->sbufsize; +} +/* + * stropen: open string buffer. + * + * r) sb STRBUF structure + */ +STRBUF * +stropen(void) +{ + STRBUF *sb = (STRBUF *)calloc(sizeof(STRBUF), 1); + + if (sb == NULL) + die("short of memory."); + sb->sbufsize = INITIALSIZE; + if (!(sb->sbuf = (char *)malloc(sb->sbufsize + 1))) + die("short of memory."); + sb->curp = sb->sbuf; + sb->endp = sb->sbuf + sb->sbufsize; + + return sb; +} +/* + * strstart: reset string buffer for new string. + * + * i) sb STRBUF structure + */ +void +strstart(sb) +STRBUF *sb; +{ + sb->curp = sb->sbuf; +} +/* + * strbuflen: return the length of string buffer. + * + * i) sb STRBUF structure + */ +int +strbuflen(sb) +STRBUF *sb; +{ + return sb->curp - sb->sbuf; +} +/* + * strvalue: return the content of string buffer. + * + * i) sb STRBUF structure + * r) string + */ +char * +strvalue(sb) +STRBUF *sb; +{ + *sb->curp = 0; + return sb->sbuf; +} +/* + * strclose: close string buffer. + * + * i) sb STRBUF structure + */ +void +strclose(sb) +STRBUF *sb; +{ + (void)free(sb->sbuf); + (void)free(sb); +} |