Annotation of src/lib/libc/gen/vis.c, Revision 1.60
1.60 ! joerg 1: /* $NetBSD: vis.c,v 1.59 2013/02/20 20:27:42 christos Exp $ */
1.6 cgd 2:
1.1 cgd 3: /*-
1.6 cgd 4: * Copyright (c) 1989, 1993
1.16 wennmach 5: * The Regents of the University of California. All rights reserved.
1.1 cgd 6: *
7: * Redistribution and use in source and binary forms, with or without
8: * modification, are permitted provided that the following conditions
9: * are met:
10: * 1. Redistributions of source code must retain the above copyright
11: * notice, this list of conditions and the following disclaimer.
12: * 2. Redistributions in binary form must reproduce the above copyright
13: * notice, this list of conditions and the following disclaimer in the
14: * documentation and/or other materials provided with the distribution.
1.29 lukem 15: * 3. Neither the name of the University nor the names of its contributors
1.1 cgd 16: * may be used to endorse or promote products derived from this software
17: * without specific prior written permission.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: */
31:
1.26 agc 32: /*-
1.31 lukem 33: * Copyright (c) 1999, 2005 The NetBSD Foundation, Inc.
1.30 lukem 34: * All rights reserved.
1.26 agc 35: *
36: * Redistribution and use in source and binary forms, with or without
37: * modification, are permitted provided that the following conditions
38: * are met:
39: * 1. Redistributions of source code must retain the above copyright
40: * notice, this list of conditions and the following disclaimer.
41: * 2. Redistributions in binary form must reproduce the above copyright
42: * notice, this list of conditions and the following disclaimer in the
43: * documentation and/or other materials provided with the distribution.
44: *
1.30 lukem 45: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
46: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
47: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
48: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
49: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
50: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
51: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
52: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
53: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
54: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
55: * POSSIBILITY OF SUCH DAMAGE.
1.26 agc 56: */
57:
1.7 christos 58: #include <sys/cdefs.h>
1.21 tv 59: #if defined(LIBC_SCCS) && !defined(lint)
1.60 ! joerg 60: __RCSID("$NetBSD: vis.c,v 1.59 2013/02/20 20:27:42 christos Exp $");
1.21 tv 61: #endif /* LIBC_SCCS and not lint */
1.46 christos 62: #ifdef __FBSDID
63: __FBSDID("$FreeBSD$");
64: #define _DIAGASSERT(x) assert(x)
65: #endif
1.1 cgd 66:
1.8 jtc 67: #include "namespace.h"
1.1 cgd 68: #include <sys/types.h>
1.59 christos 69: #include <sys/param.h>
1.12 lukem 70:
71: #include <assert.h>
1.1 cgd 72: #include <vis.h>
1.44 christos 73: #include <errno.h>
1.22 christos 74: #include <stdlib.h>
1.46 christos 75: #include <wchar.h>
76: #include <wctype.h>
1.8 jtc 77:
78: #ifdef __weak_alias
1.18 mycroft 79: __weak_alias(strvisx,_strvisx)
1.20 tv 80: #endif
81:
1.24 pooka 82: #if !HAVE_VIS || !HAVE_SVIS
1.20 tv 83: #include <ctype.h>
84: #include <limits.h>
85: #include <stdio.h>
86: #include <string.h>
1.1 cgd 87:
1.47 christos 88: /*
89: * The reason for going through the trouble to deal with character encodings
90: * in vis(3), is that we use this to safe encode output of commands. This
91: * safe encoding varies depending on the character set. For example if we
92: * display ps output in French, we don't want to display French characters
93: * as M-foo.
94: */
95:
1.48 pooka 96: static wchar_t *do_svis(wchar_t *, wint_t, int, wint_t, const wchar_t *);
1.37 dsl 97:
1.15 wennmach 98: #undef BELL
1.46 christos 99: #define BELL L'\a'
1.15 wennmach 100:
1.46 christos 101: #define iswoctal(c) (((u_char)(c)) >= L'0' && ((u_char)(c)) <= L'7')
102: #define iswwhite(c) (c == L' ' || c == L'\t' || c == L'\n')
103: #define iswsafe(c) (c == L'\b' || c == BELL || c == L'\r')
104: #define xtoa(c) L"0123456789abcdef"[c]
105: #define XTOA(c) L"0123456789ABCDEF"[c]
1.16 wennmach 106:
1.54 christos 107: #define MAXEXTRAS 10
1.15 wennmach 108:
1.60 ! joerg 109: #if !HAVE_NBTOOL_CONFIG_H
1.59 christos 110: #ifndef __NetBSD__
1.57 christos 111: /*
112: * On NetBSD MB_LEN_MAX is currently 32 which does not fit on any integer
113: * integral type and it is probably wrong, since currently the maximum
114: * number of bytes and character needs is 6. Until this is fixed, the
115: * loops below are using sizeof(uint64_t) - 1 instead of MB_LEN_MAX, and
116: * the assertion is commented out.
117: */
1.59 christos 118: #ifdef __FreeBSD__
119: /*
120: * On FreeBSD including <sys/systm.h> for CTASSERT only works in kernel
121: * mode.
122: */
123: #ifndef CTASSERT
124: #define CTASSERT(x) _CTASSERT(x, __LINE__)
125: #define _CTASSERT(x, y) __CTASSERT(x, y)
126: #define __CTASSERT(x, y) typedef char __assert ## y[(x) ? 1 : -1]
1.57 christos 127: #endif
1.59 christos 128: #endif /* __FreeBSD__ */
129: CTASSERT(MB_LEN_MAX <= sizeof(uint64_t));
130: #endif /* !__NetBSD__ */
1.60 ! joerg 131: #endif
1.57 christos 132:
1.22 christos 133: /*
1.37 dsl 134: * This is do_hvis, for HTTP style (RFC 1808)
1.22 christos 135: */
1.46 christos 136: static wchar_t *
1.54 christos 137: do_hvis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
1.37 dsl 138: {
1.46 christos 139: if (iswalnum(c)
1.41 plunky 140: /* safe */
1.46 christos 141: || c == L'$' || c == L'-' || c == L'_' || c == L'.' || c == L'+'
1.41 plunky 142: /* extra */
1.46 christos 143: || c == L'!' || c == L'*' || c == L'\'' || c == L'(' || c == L')'
144: || c == L',')
1.54 christos 145: dst = do_svis(dst, c, flags, nextc, extra);
1.46 christos 146: else {
147: *dst++ = L'%';
1.37 dsl 148: *dst++ = xtoa(((unsigned int)c >> 4) & 0xf);
149: *dst++ = xtoa((unsigned int)c & 0xf);
150: }
1.41 plunky 151:
1.37 dsl 152: return dst;
153: }
1.27 enami 154:
1.15 wennmach 155: /*
1.39 christos 156: * This is do_mvis, for Quoted-Printable MIME (RFC 2045)
157: * NB: No handling of long lines or CRLF.
158: */
1.46 christos 159: static wchar_t *
1.54 christos 160: do_mvis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
1.39 christos 161: {
1.46 christos 162: if ((c != L'\n') &&
1.39 christos 163: /* Space at the end of the line */
1.46 christos 164: ((iswspace(c) && (nextc == L'\r' || nextc == L'\n')) ||
1.39 christos 165: /* Out of range */
1.46 christos 166: (!iswspace(c) && (c < 33 || (c > 60 && c < 62) || c > 126)) ||
1.55 christos 167: /* Specific char to be escaped */
1.46 christos 168: wcschr(L"#$@[\\]^`{|}~", c) != NULL)) {
169: *dst++ = L'=';
1.39 christos 170: *dst++ = XTOA(((unsigned int)c >> 4) & 0xf);
171: *dst++ = XTOA((unsigned int)c & 0xf);
1.46 christos 172: } else
1.54 christos 173: dst = do_svis(dst, c, flags, nextc, extra);
1.39 christos 174: return dst;
175: }
176:
177: /*
1.54 christos 178: * Output single byte of multibyte character.
1.15 wennmach 179: */
1.46 christos 180: static wchar_t *
1.54 christos 181: do_mbyte(wchar_t *dst, wint_t c, int flags, wint_t nextc, int iswextra)
1.37 dsl 182: {
1.54 christos 183: if (flags & VIS_CSTYLE) {
1.37 dsl 184: switch (c) {
1.46 christos 185: case L'\n':
186: *dst++ = L'\\'; *dst++ = L'n';
1.37 dsl 187: return dst;
1.46 christos 188: case L'\r':
189: *dst++ = L'\\'; *dst++ = L'r';
1.37 dsl 190: return dst;
1.46 christos 191: case L'\b':
192: *dst++ = L'\\'; *dst++ = L'b';
1.37 dsl 193: return dst;
194: case BELL:
1.46 christos 195: *dst++ = L'\\'; *dst++ = L'a';
1.37 dsl 196: return dst;
1.46 christos 197: case L'\v':
198: *dst++ = L'\\'; *dst++ = L'v';
1.37 dsl 199: return dst;
1.46 christos 200: case L'\t':
201: *dst++ = L'\\'; *dst++ = L't';
1.37 dsl 202: return dst;
1.46 christos 203: case L'\f':
204: *dst++ = L'\\'; *dst++ = L'f';
1.37 dsl 205: return dst;
1.46 christos 206: case L' ':
207: *dst++ = L'\\'; *dst++ = L's';
1.37 dsl 208: return dst;
1.46 christos 209: case L'\0':
210: *dst++ = L'\\'; *dst++ = L'0';
211: if (iswoctal(nextc)) {
212: *dst++ = L'0';
213: *dst++ = L'0';
1.37 dsl 214: }
215: return dst;
216: default:
1.46 christos 217: if (iswgraph(c)) {
218: *dst++ = L'\\';
219: *dst++ = c;
1.37 dsl 220: return dst;
221: }
222: }
223: }
1.54 christos 224: if (iswextra || ((c & 0177) == L' ') || (flags & VIS_OCTAL)) {
1.46 christos 225: *dst++ = L'\\';
226: *dst++ = (u_char)(((u_int32_t)(u_char)c >> 6) & 03) + L'0';
227: *dst++ = (u_char)(((u_int32_t)(u_char)c >> 3) & 07) + L'0';
228: *dst++ = (c & 07) + L'0';
1.37 dsl 229: } else {
1.54 christos 230: if ((flags & VIS_NOSLASH) == 0)
1.46 christos 231: *dst++ = L'\\';
1.55 christos 232:
1.37 dsl 233: if (c & 0200) {
1.46 christos 234: c &= 0177;
235: *dst++ = L'M';
1.37 dsl 236: }
1.55 christos 237:
1.46 christos 238: if (iswcntrl(c)) {
239: *dst++ = L'^';
1.37 dsl 240: if (c == 0177)
1.46 christos 241: *dst++ = L'?';
1.37 dsl 242: else
1.46 christos 243: *dst++ = c + L'@';
1.37 dsl 244: } else {
1.46 christos 245: *dst++ = L'-';
246: *dst++ = c;
1.37 dsl 247: }
248: }
1.54 christos 249:
250: return dst;
251: }
252:
253: /*
254: * This is do_vis, the central code of vis.
255: * dst: Pointer to the destination buffer
256: * c: Character to encode
1.59 christos 257: * flags: Flags word
1.54 christos 258: * nextc: The character following 'c'
259: * extra: Pointer to the list of extra characters to be
260: * backslash-protected.
261: */
262: static wchar_t *
263: do_svis(wchar_t *dst, wint_t c, int flags, wint_t nextc, const wchar_t *extra)
264: {
265: int iswextra, i, shft;
1.57 christos 266: uint64_t bmsk, wmsk;
1.54 christos 267:
268: iswextra = wcschr(extra, c) != NULL;
269: if (!iswextra && (iswgraph(c) || iswwhite(c) ||
270: ((flags & VIS_SAFE) && iswsafe(c)))) {
271: *dst++ = c;
272: return dst;
273: }
274:
275: /* See comment in istrsenvisx() output loop, below. */
276: wmsk = 0;
1.59 christos 277: for (i = sizeof(wmsk) - 1; i >= 0; i--) {
1.54 christos 278: shft = i * NBBY;
1.59 christos 279: bmsk = (uint64_t)0xffLL << shft;
1.54 christos 280: wmsk |= bmsk;
281: if ((c & wmsk) || i == 0)
282: dst = do_mbyte(dst, (wint_t)(
1.59 christos 283: (uint64_t)(c & bmsk) >> shft),
1.54 christos 284: flags, nextc, iswextra);
285: }
286:
1.37 dsl 287: return dst;
288: }
1.15 wennmach 289:
1.46 christos 290: typedef wchar_t *(*visfun_t)(wchar_t *, wint_t, int, wint_t, const wchar_t *);
1.39 christos 291:
292: /*
293: * Return the appropriate encoding function depending on the flags given.
294: */
295: static visfun_t
1.54 christos 296: getvisfun(int flags)
1.39 christos 297: {
1.54 christos 298: if (flags & VIS_HTTPSTYLE)
1.39 christos 299: return do_hvis;
1.54 christos 300: if (flags & VIS_MIMESTYLE)
1.39 christos 301: return do_mvis;
302: return do_svis;
303: }
1.15 wennmach 304:
305: /*
1.54 christos 306: * Expand list of extra characters to not visually encode.
307: */
308: static wchar_t *
309: makeextralist(int flags, const char *src)
310: {
311: wchar_t *dst, *d;
312: size_t len;
313:
314: len = strlen(src);
315: if ((dst = calloc(len + MAXEXTRAS, sizeof(*dst))) == NULL)
316: return NULL;
317:
318: if (mbstowcs(dst, src, len) == (size_t)-1) {
1.58 tron 319: size_t i;
320: for (i = 0; i < len; i++)
1.54 christos 321: dst[i] = (wint_t)(u_char)src[i];
322: d = dst + len;
323: } else
324: d = dst + wcslen(dst);
325:
326: if (flags & VIS_GLOB) {
327: *d++ = L'*';
328: *d++ = L'?';
329: *d++ = L'[';
330: *d++ = L'#';
331: }
332:
1.55 christos 333: if (flags & VIS_SP) *d++ = L' ';
334: if (flags & VIS_TAB) *d++ = L'\t';
1.54 christos 335: if (flags & VIS_NL) *d++ = L'\n';
336: if ((flags & VIS_NOSLASH) == 0) *d++ = L'\\';
337: *d = L'\0';
338:
339: return dst;
340: }
341:
342: /*
343: * istrsenvisx()
1.46 christos 344: * The main internal function.
345: * All user-visible functions call this one.
1.15 wennmach 346: */
1.46 christos 347: static int
1.54 christos 348: istrsenvisx(char *mbdst, size_t *dlen, const char *mbsrc, size_t mblength,
349: int flags, const char *mbextra, int *cerr_ptr)
1.15 wennmach 350: {
1.54 christos 351: wchar_t *dst, *src, *pdst, *psrc, *start, *extra;
1.50 christos 352: size_t len, olen;
1.57 christos 353: uint64_t bmsk, wmsk;
354: wint_t c;
1.39 christos 355: visfun_t f;
1.56 riz 356: int clen = 0, cerr = 0, error = -1, i, shft;
1.54 christos 357: ssize_t mbslength, maxolen;
1.46 christos 358:
359: _DIAGASSERT(mbdst != NULL);
360: _DIAGASSERT(mbsrc != NULL);
361: _DIAGASSERT(mbextra != NULL);
362:
1.53 christos 363: /*
364: * Input (mbsrc) is a char string considered to be multibyte
365: * characters. The input loop will read this string pulling
366: * one character, possibly multiple bytes, from mbsrc and
367: * converting each to wchar_t in src.
368: *
369: * The vis conversion will be done using the wide char
370: * wchar_t string.
371: *
372: * This will then be converted back to a multibyte string to
373: * return to the caller.
374: */
375:
376: /* Allocate space for the wide char strings */
1.54 christos 377: psrc = pdst = extra = NULL;
1.46 christos 378: if (!mblength)
379: mblength = strlen(mbsrc);
380: if ((psrc = calloc(mblength + 1, sizeof(*psrc))) == NULL)
381: return -1;
382: if ((pdst = calloc((4 * mblength) + 1, sizeof(*pdst))) == NULL)
383: goto out;
384: dst = pdst;
385: src = psrc;
386:
1.59 christos 387: /* Use caller's multibyte conversion error flag. */
1.54 christos 388: if (cerr_ptr)
389: cerr = *cerr_ptr;
390:
1.53 christos 391: /*
392: * Input loop.
393: * Handle up to mblength characters (not bytes). We do not
394: * stop at NULs because we may be processing a block of data
1.54 christos 395: * that includes NULs.
1.53 christos 396: */
1.50 christos 397: mbslength = (ssize_t)mblength;
1.53 christos 398: /*
399: * When inputing a single character, must also read in the
400: * next character for nextc, the look-ahead character.
401: */
402: if (mbslength == 1)
403: mbslength++;
404: while (mbslength > 0) {
405: /* Convert one multibyte character to wchar_t. */
1.54 christos 406: if (!cerr)
407: clen = mbtowc(src, mbsrc, MB_LEN_MAX);
408: if (cerr || clen < 0) {
1.53 christos 409: /* Conversion error, process as a byte instead. */
1.54 christos 410: *src = (wint_t)(u_char)*mbsrc;
1.50 christos 411: clen = 1;
1.54 christos 412: cerr = 1;
1.51 christos 413: }
1.50 christos 414: if (clen == 0)
1.53 christos 415: /*
416: * NUL in input gives 0 return value. process
1.54 christos 417: * as single NUL byte and keep going.
1.53 christos 418: */
1.50 christos 419: clen = 1;
1.54 christos 420: /* Advance buffer character pointer. */
1.50 christos 421: src++;
1.53 christos 422: /* Advance input pointer by number of bytes read. */
1.50 christos 423: mbsrc += clen;
1.54 christos 424: /* Decrement input byte count. */
1.50 christos 425: mbslength -= clen;
1.46 christos 426: }
1.55 christos 427: len = src - psrc;
1.50 christos 428: src = psrc;
1.53 christos 429: /*
430: * In the single character input case, we will have actually
431: * processed two characters, c and nextc. Reset len back to
432: * just a single character.
433: */
434: if (mblength < len)
435: len = mblength;
1.46 christos 436:
1.53 christos 437: /* Convert extra argument to list of characters for this mode. */
1.54 christos 438: extra = makeextralist(flags, mbextra);
439: if (!extra) {
1.44 christos 440: if (dlen && *dlen == 0) {
441: errno = ENOSPC;
1.46 christos 442: goto out;
1.44 christos 443: }
1.54 christos 444: *mbdst = '\0'; /* can't create extra, return "" */
1.46 christos 445: error = 0;
446: goto out;
1.31 lukem 447: }
1.46 christos 448:
1.53 christos 449: /* Look up which processing function to call. */
1.54 christos 450: f = getvisfun(flags);
1.46 christos 451:
1.53 christos 452: /*
453: * Main processing loop.
454: * Call do_Xvis processing function one character at a time
455: * with next character available for look-ahead.
456: */
1.46 christos 457: for (start = dst; len > 0; len--) {
458: c = *src++;
1.54 christos 459: dst = (*f)(dst, c, flags, len >= 1 ? *src : L'\0', extra);
1.46 christos 460: if (dst == NULL) {
461: errno = ENOSPC;
462: goto out;
463: }
464: }
465:
1.54 christos 466: /* Terminate the string in the buffer. */
467: *dst = L'\0';
468:
469: /*
470: * Output loop.
471: * Convert wchar_t string back to multibyte output string.
472: * If we have hit a multi-byte conversion error on input,
473: * output byte-by-byte here. Else use wctomb().
474: */
475: len = wcslen(start);
476: maxolen = dlen ? *dlen : (wcslen(start) * MB_LEN_MAX + 1);
477: olen = 0;
478: for (dst = start; len > 0; len--) {
479: if (!cerr)
480: clen = wctomb(mbdst, *dst);
481: if (cerr || clen < 0) {
482: /*
483: * Conversion error, process as a byte(s) instead.
484: * Examine each byte and higher-order bytes for
1.55 christos 485: * data. E.g.,
1.59 christos 486: * 0x000000000000a264 -> a2 64
487: * 0x000000001f00a264 -> 1f 00 a2 64
1.54 christos 488: */
489: clen = 0;
490: wmsk = 0;
1.59 christos 491: for (i = sizeof(wmsk) - 1; i >= 0; i--) {
1.54 christos 492: shft = i * NBBY;
1.59 christos 493: bmsk = (uint64_t)0xffLL << shft;
1.54 christos 494: wmsk |= bmsk;
495: if ((*dst & wmsk) || i == 0)
1.59 christos 496: mbdst[clen++] = (char)(
497: (uint64_t)(*dst & bmsk) >>
498: shft);
1.54 christos 499: }
500: cerr = 1;
501: }
502: /* If this character would exceed our output limit, stop. */
503: if (olen + clen > (size_t)maxolen)
504: break;
505: /* Advance output pointer by number of bytes written. */
506: mbdst += clen;
507: /* Advance buffer character pointer. */
508: dst++;
509: /* Incrment output character count. */
510: olen += clen;
511: }
512:
1.53 christos 513: /* Terminate the output string. */
1.54 christos 514: *mbdst = '\0';
1.46 christos 515:
1.59 christos 516: /* Pass conversion error flag out. */
1.54 christos 517: if (cerr_ptr)
518: *cerr_ptr = cerr;
1.46 christos 519:
520: free(extra);
521: free(pdst);
522: free(psrc);
523:
524: return (int)olen;
525: out:
526: free(extra);
527: free(pdst);
528: free(psrc);
529: return error;
1.15 wennmach 530: }
1.46 christos 531: #endif
532:
533: #if !HAVE_SVIS
534: /*
535: * The "svis" variants all take an "extra" arg that is a pointer
536: * to a NUL-terminated list of characters to be encoded, too.
537: * These functions are useful e. g. to encode strings in such a
538: * way so that they are not interpreted by a shell.
539: */
1.15 wennmach 540:
1.44 christos 541: char *
1.54 christos 542: svis(char *mbdst, int c, int flags, int nextc, const char *mbextra)
1.44 christos 543: {
1.46 christos 544: char cc[2];
545: int ret;
546:
547: cc[0] = c;
548: cc[1] = nextc;
549:
1.54 christos 550: ret = istrsenvisx(mbdst, NULL, cc, 1, flags, mbextra, NULL);
1.46 christos 551: if (ret < 0)
552: return NULL;
553: return mbdst + ret;
1.44 christos 554: }
555:
556: char *
1.54 christos 557: snvis(char *mbdst, size_t dlen, int c, int flags, int nextc, const char *mbextra)
1.44 christos 558: {
1.46 christos 559: char cc[2];
560: int ret;
1.44 christos 561:
1.46 christos 562: cc[0] = c;
563: cc[1] = nextc;
1.15 wennmach 564:
1.54 christos 565: ret = istrsenvisx(mbdst, &dlen, cc, 1, flags, mbextra, NULL);
1.46 christos 566: if (ret < 0)
567: return NULL;
568: return mbdst + ret;
1.15 wennmach 569: }
570:
1.44 christos 571: int
1.54 christos 572: strsvis(char *mbdst, const char *mbsrc, int flags, const char *mbextra)
1.44 christos 573: {
1.54 christos 574: return istrsenvisx(mbdst, NULL, mbsrc, 0, flags, mbextra, NULL);
1.44 christos 575: }
1.15 wennmach 576:
577: int
1.54 christos 578: strsnvis(char *mbdst, size_t dlen, const char *mbsrc, int flags, const char *mbextra)
1.44 christos 579: {
1.54 christos 580: return istrsenvisx(mbdst, &dlen, mbsrc, 0, flags, mbextra, NULL);
1.15 wennmach 581: }
1.44 christos 582:
583: int
1.54 christos 584: strsvisx(char *mbdst, const char *mbsrc, size_t len, int flags, const char *mbextra)
1.44 christos 585: {
1.54 christos 586: return istrsenvisx(mbdst, NULL, mbsrc, len, flags, mbextra, NULL);
1.44 christos 587: }
588:
589: int
1.54 christos 590: strsnvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags,
1.46 christos 591: const char *mbextra)
1.44 christos 592: {
1.54 christos 593: return istrsenvisx(mbdst, &dlen, mbsrc, len, flags, mbextra, NULL);
594: }
595:
596: int
597: strsenvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags,
598: const char *mbextra, int *cerr_ptr)
599: {
600: return istrsenvisx(mbdst, &dlen, mbsrc, len, flags, mbextra, cerr_ptr);
1.44 christos 601: }
1.24 pooka 602: #endif
1.15 wennmach 603:
1.24 pooka 604: #if !HAVE_VIS
1.1 cgd 605: /*
606: * vis - visually encode characters
607: */
1.46 christos 608: char *
1.54 christos 609: vis(char *mbdst, int c, int flags, int nextc)
1.15 wennmach 610: {
1.46 christos 611: char cc[2];
612: int ret;
1.15 wennmach 613:
1.46 christos 614: cc[0] = c;
615: cc[1] = nextc;
1.15 wennmach 616:
1.54 christos 617: ret = istrsenvisx(mbdst, NULL, cc, 1, flags, "", NULL);
1.46 christos 618: if (ret < 0)
1.44 christos 619: return NULL;
1.46 christos 620: return mbdst + ret;
1.1 cgd 621: }
622:
1.44 christos 623: char *
1.54 christos 624: nvis(char *mbdst, size_t dlen, int c, int flags, int nextc)
1.44 christos 625: {
1.46 christos 626: char cc[2];
627: int ret;
628:
629: cc[0] = c;
630: cc[1] = nextc;
1.44 christos 631:
1.54 christos 632: ret = istrsenvisx(mbdst, &dlen, cc, 1, flags, "", NULL);
1.46 christos 633: if (ret < 0)
634: return NULL;
635: return mbdst + ret;
1.44 christos 636: }
637:
1.1 cgd 638: /*
1.46 christos 639: * strvis - visually encode characters from src into dst
1.27 enami 640: *
1.16 wennmach 641: * Dst must be 4 times the size of src to account for possible
642: * expansion. The length of dst, not including the trailing NULL,
1.27 enami 643: * is returned.
1.1 cgd 644: */
645:
1.44 christos 646: int
1.54 christos 647: strvis(char *mbdst, const char *mbsrc, int flags)
1.44 christos 648: {
1.54 christos 649: return istrsenvisx(mbdst, NULL, mbsrc, 0, flags, "", NULL);
1.44 christos 650: }
1.15 wennmach 651:
1.1 cgd 652: int
1.54 christos 653: strnvis(char *mbdst, size_t dlen, const char *mbsrc, int flags)
1.44 christos 654: {
1.54 christos 655: return istrsenvisx(mbdst, &dlen, mbsrc, 0, flags, "", NULL);
1.44 christos 656: }
657:
1.46 christos 658: /*
659: * strvisx - visually encode characters from src into dst
660: *
661: * Dst must be 4 times the size of src to account for possible
662: * expansion. The length of dst, not including the trailing NULL,
663: * is returned.
664: *
665: * Strvisx encodes exactly len characters from src into dst.
666: * This is useful for encoding a block of data.
667: */
1.44 christos 668:
669: int
1.54 christos 670: strvisx(char *mbdst, const char *mbsrc, size_t len, int flags)
671: {
672: return istrsenvisx(mbdst, NULL, mbsrc, len, flags, "", NULL);
673: }
674:
675: int
676: strnvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags)
1.44 christos 677: {
1.54 christos 678: return istrsenvisx(mbdst, &dlen, mbsrc, len, flags, "", NULL);
1.44 christos 679: }
680:
681: int
1.54 christos 682: strenvisx(char *mbdst, size_t dlen, const char *mbsrc, size_t len, int flags,
683: int *cerr_ptr)
1.44 christos 684: {
1.54 christos 685: return istrsenvisx(mbdst, &dlen, mbsrc, len, flags, "", cerr_ptr);
1.44 christos 686: }
1.20 tv 687: #endif
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