| rev |
line source |
|
yuuji@0
|
1 /* ========================================================================
|
|
yuuji@0
|
2 * Copyright 1988-2006 University of Washington
|
|
yuuji@0
|
3 *
|
|
yuuji@0
|
4 * Licensed under the Apache License, Version 2.0 (the "License");
|
|
yuuji@0
|
5 * you may not use this file except in compliance with the License.
|
|
yuuji@0
|
6 * You may obtain a copy of the License at
|
|
yuuji@0
|
7 *
|
|
yuuji@0
|
8 * http://www.apache.org/licenses/LICENSE-2.0
|
|
yuuji@0
|
9 *
|
|
yuuji@0
|
10 *
|
|
yuuji@0
|
11 * ========================================================================
|
|
yuuji@0
|
12 */
|
|
yuuji@0
|
13
|
|
yuuji@0
|
14 /*
|
|
yuuji@0
|
15 * Program: UNIX/VMS newline routines
|
|
yuuji@0
|
16 *
|
|
yuuji@0
|
17 * Author: Mark Crispin
|
|
yuuji@0
|
18 * Networks and Distributed Computing
|
|
yuuji@0
|
19 * Computing & Communications
|
|
yuuji@0
|
20 * University of Washington
|
|
yuuji@0
|
21 * Administration Building, AG-44
|
|
yuuji@0
|
22 * Seattle, WA 98195
|
|
yuuji@0
|
23 * Internet: MRC@CAC.Washington.EDU
|
|
yuuji@0
|
24 *
|
|
yuuji@0
|
25 * Date: 1 August 1988
|
|
yuuji@0
|
26 * Last Edited: 30 August 2006
|
|
yuuji@0
|
27 */
|
|
yuuji@0
|
28
|
|
yuuji@0
|
29 /* Copy string with CRLF newlines
|
|
yuuji@0
|
30 * Accepts: destination string
|
|
yuuji@0
|
31 * pointer to size of destination string buffer
|
|
yuuji@0
|
32 * source string
|
|
yuuji@0
|
33 * length of source string
|
|
yuuji@0
|
34 * Returns: length of copied string
|
|
yuuji@0
|
35 */
|
|
yuuji@0
|
36
|
|
yuuji@0
|
37 unsigned long strcrlfcpy (unsigned char **dst,unsigned long *dstl,
|
|
yuuji@0
|
38 unsigned char *src,unsigned long srcl)
|
|
yuuji@0
|
39 {
|
|
yuuji@0
|
40 long i = srcl * 2,j;
|
|
yuuji@0
|
41 unsigned char c,*d = src;
|
|
yuuji@0
|
42 if (*dst) { /* candidate destination provided? */
|
|
yuuji@0
|
43 /* count NLs if doesn't fit worst-case */
|
|
yuuji@0
|
44 if (i > *dstl) for (i = j = srcl; j; --j) if (*d++ == '\012') i++;
|
|
yuuji@0
|
45 /* still too small, must reset destination */
|
|
yuuji@0
|
46 if (i > *dstl) fs_give ((void **) dst);
|
|
yuuji@0
|
47 }
|
|
yuuji@0
|
48 /* make a new buffer if needed */
|
|
yuuji@0
|
49 if (!*dst) *dst = (char *) fs_get ((*dstl = i) + 1);
|
|
yuuji@0
|
50 d = *dst; /* destination string */
|
|
yuuji@0
|
51 if (srcl) do { /* main copy loop */
|
|
yuuji@0
|
52 if ((c = *src++) < '\016') {
|
|
yuuji@0
|
53 /* prepend CR to LF */
|
|
yuuji@0
|
54 if (c == '\012') *d++ = '\015';
|
|
yuuji@0
|
55 /* unlikely CR */
|
|
yuuji@0
|
56 else if ((c == '\015') && (srcl > 1) && (*src == '\012')) {
|
|
yuuji@0
|
57 *d++ = c; /* copy the CR */
|
|
yuuji@0
|
58 c = *src++; /* grab the LF */
|
|
yuuji@0
|
59 --srcl; /* adjust the count */
|
|
yuuji@0
|
60 }
|
|
yuuji@0
|
61 }
|
|
yuuji@0
|
62 *d++ = c; /* copy character */
|
|
yuuji@0
|
63 } while (--srcl);
|
|
yuuji@0
|
64 *d = '\0'; /* tie off destination */
|
|
yuuji@0
|
65 return d - *dst; /* return length */
|
|
yuuji@0
|
66 }
|
|
yuuji@0
|
67
|
|
yuuji@0
|
68 /* Length of string after strcrlfcpy applied
|
|
yuuji@0
|
69 * Accepts: source string
|
|
yuuji@0
|
70 * Returns: length of string
|
|
yuuji@0
|
71 */
|
|
yuuji@0
|
72
|
|
yuuji@0
|
73 unsigned long strcrlflen (STRING *s)
|
|
yuuji@0
|
74 {
|
|
yuuji@0
|
75 unsigned long pos = GETPOS (s);
|
|
yuuji@0
|
76 unsigned long i = SIZE (s);
|
|
yuuji@0
|
77 unsigned long j = i;
|
|
yuuji@0
|
78 while (j--) switch (SNX (s)) {/* search for newlines */
|
|
yuuji@0
|
79 case '\015': /* unlikely carriage return */
|
|
yuuji@0
|
80 if (j && (CHR (s) == '\012')) {
|
|
yuuji@0
|
81 SNX (s); /* eat the line feed */
|
|
yuuji@0
|
82 j--;
|
|
yuuji@0
|
83 }
|
|
yuuji@0
|
84 break;
|
|
yuuji@0
|
85 case '\012': /* line feed? */
|
|
yuuji@0
|
86 i++;
|
|
yuuji@0
|
87 default: /* ordinary chararacter */
|
|
yuuji@0
|
88 break;
|
|
yuuji@0
|
89 }
|
|
yuuji@0
|
90 SETPOS (s,pos); /* restore old position */
|
|
yuuji@0
|
91 return i;
|
|
yuuji@0
|
92 }
|
