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| author | Robert de Bath <rdebath@poboxes.com> | 1997-02-25 20:42:19 +0100 |
|---|---|---|
| committer | Lubomir Rintel <lkundrak@v3.sk> | 2013-10-23 23:38:07 +0200 |
| commit | 4c36e9a0c125ccfff37aa440dab2cf58c4152fff (patch) | |
| tree | a5d9c84ba2661029ddb2223dacd50529a361c3d5 /unproto/vstring.c | |
| parent | f8de35da65c5d93bb733073cf40da154bc1c0748 (diff) | |
| parent | 9696d7b0e1f3a1b0f5fd4a0428eb75afe8ad4ed6 (diff) | |
| download | dev86-4c36e9a0c125ccfff37aa440dab2cf58c4152fff.tar.gz | |
Import Dev86src-0.0.11.tar.gzv0.0.11
Diffstat (limited to 'unproto/vstring.c')
| -rw-r--r-- | unproto/vstring.c | 39 |
1 files changed, 35 insertions, 4 deletions
diff --git a/unproto/vstring.c b/unproto/vstring.c index fb8d053..220bd53 100644 --- a/unproto/vstring.c +++ b/unproto/vstring.c @@ -15,13 +15,19 @@ /* struct vstring *vs; /* char *wp; /* int ch; +/* +/* char *vs_strcpy(vp, dst, src) +/* struct vstring *vp; +/* char *dst; +/* char *src; /* DESCRIPTION /* These functions and macros implement a small library for /* arbitrary-length strings that grow automatically when /* they fill up. The allocation strategy is such that there /* will always be place for the terminating null character. /* -/* vs_alloc() allocates storage for a variable-length string. +/* vs_alloc() allocates storage for a variable-length string +/* of at least "len" bytes. /* /* VS_ADDCH() adds a character to a variable-length string /* and automagically extends the string if fills up. @@ -30,11 +36,19 @@ /* array; \fIch\fP the character value to be written. /* Note that VS_ADDCH() is a macro that evaluates some /* arguments more than once. +/* +/* vs_strcpy() appends a null-terminated string to a variable-length +/* string. \fIsrc\fP provides the data to be copied; \fIvp\fP is the +/* target, and \fIdst\fP the current write position within the target. +/* The result is null-terminated. The return value is the new write +/* position. /* DIAGNOSTICS /* VS_ADDCH() returns zero if it was unable to dynamically /* resize a string. /* /* vs_alloc() returns a null pointer in case of problems. +/* +/* vs_strcpy() returns a null pointer if the request failed. /* BUGS /* Auto-resizing may change the address of the string data in /* a vstring structure. Beware of dangling pointers. @@ -44,12 +58,12 @@ /* Department of Mathematics and Computer Science /* Den Dolech 2, P.O. Box 513, 5600 MB Eindhoven, The Netherlands /* LAST MODIFICATION -/* 91/09/22 21:21:38 +/* 92/01/15 21:53:06 /* VERSION/RELEASE -/* 1.2 +/* 1.3 /*--*/ -static char vstring_sccsid[] = "@(#) vstring.c 1.2 91/09/22 21:21:38"; +static char vstring_sccsid[] = "@(#) vstring.c 1.3 92/01/15 21:53:06"; /* C library */ @@ -89,3 +103,20 @@ char *cp; vp->last = vp->str + len - 1; return (vp->str + where); } + +/* vs_strcpy - copy string */ + +char *vs_strcpy(vp, dst, src) +register struct vstring *vp; +register char *dst; +register char *src; +{ + while (*src) { + if (VS_ADDCH(vp, dst, *src) == 0) + return (0); + src++; + } + *dst = '\0'; + return (dst); +} + |