1 /****************************************************************************
2 * Copyright (c) 2001-2007,2008 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29 /****************************************************************************
30 * Author: Thomas E. Dickey 1996-on *
31 * and: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 ****************************************************************************/
34
35 /*
36 * visbuf.c - Tracing/Debugging support routines
37 */
38
39 #define NEED_NCURSES_CH_T
40 #include <curses.priv.h>
41
42 #include <tic.h>
43 #include <ctype.h>
44
45 MODULE_ID("$Id: visbuf.c,v 1.32 2008/08/04 23:07:39 tom Exp $")
46
47 #define NormalLen(len) (size_t) (((size_t)(len) + 1) * 4)
48 #define WideLen(len) (size_t) (((size_t)(len) + 1) * 4 * MB_CUR_MAX)
49
50 #ifdef TRACE
51 static const char d_quote[] = StringOf(D_QUOTE);
52 static const char l_brace[] = StringOf(L_BRACE);
53 static const char r_brace[] = StringOf(R_BRACE);
54 #endif
55
56 static char *
_nc_vischar(char * tp,unsigned c)57 _nc_vischar(char *tp, unsigned c)
58 {
59 if (c == '"' || c == '\\') {
60 *tp++ = '\\';
61 *tp++ = (char) c;
62 } else if (is7bits(c) && (isgraph(c) || c == ' ')) {
63 *tp++ = (char) c;
64 } else if (c == '\n') {
65 *tp++ = '\\';
66 *tp++ = 'n';
67 } else if (c == '\r') {
68 *tp++ = '\\';
69 *tp++ = 'r';
70 } else if (c == '\b') {
71 *tp++ = '\\';
72 *tp++ = 'b';
73 } else if (c == '\033') {
74 *tp++ = '\\';
75 *tp++ = 'e';
76 } else if (UChar(c) == 0x7f) {
77 *tp++ = '\\';
78 *tp++ = '^';
79 *tp++ = '?';
80 } else if (is7bits(c) && iscntrl(UChar(c))) {
81 *tp++ = '\\';
82 *tp++ = '^';
83 *tp++ = (char) ('@' + c);
84 } else {
85 sprintf(tp, "\\%03lo", (unsigned long) ChCharOf(c));
86 tp += strlen(tp);
87 }
88 *tp = 0;
89 return tp;
90 }
91
92 static const char *
_nc_visbuf2n(int bufnum,const char * buf,int len)93 _nc_visbuf2n(int bufnum, const char *buf, int len)
94 {
95 const char *vbuf;
96 char *tp;
97 int c;
98
99 if (buf == 0)
100 return ("(null)");
101 if (buf == CANCELLED_STRING)
102 return ("(cancelled)");
103
104 if (len < 0)
105 len = (int) strlen(buf);
106
107 #ifdef TRACE
108 vbuf = tp = _nc_trace_buf(bufnum, NormalLen(len));
109 #else
110 {
111 static char *mybuf[4];
112 mybuf[bufnum] = typeRealloc(char, NormalLen(len), mybuf[bufnum]);
113 vbuf = tp = mybuf[bufnum];
114 }
115 #endif
116 if (tp != 0) {
117 *tp++ = D_QUOTE;
118 while ((--len >= 0) && (c = *buf++) != '\0') {
119 tp = _nc_vischar(tp, UChar(c));
120 }
121 *tp++ = D_QUOTE;
122 *tp++ = '\0';
123 } else {
124 vbuf = ("(_nc_visbuf2n failed)");
125 }
126 return (vbuf);
127 }
128
129 NCURSES_EXPORT(const char *)
_nc_visbuf2(int bufnum,const char * buf)130 _nc_visbuf2(int bufnum, const char *buf)
131 {
132 return _nc_visbuf2n(bufnum, buf, -1);
133 }
134
135 NCURSES_EXPORT(const char *)
_nc_visbuf(const char * buf)136 _nc_visbuf(const char *buf)
137 {
138 return _nc_visbuf2(0, buf);
139 }
140
141 NCURSES_EXPORT(const char *)
_nc_visbufn(const char * buf,int len)142 _nc_visbufn(const char *buf, int len)
143 {
144 return _nc_visbuf2n(0, buf, len);
145 }
146
147 #ifdef TRACE
148 #if USE_WIDEC_SUPPORT
149
150 #if defined(USE_TERMLIB)
151 #define _nc_wchstrlen _my_wchstrlen
152 static int
_nc_wchstrlen(const cchar_t * s)153 _nc_wchstrlen(const cchar_t *s)
154 {
155 int result = 0;
156 while (CharOf(s[result]) != L'\0') {
157 result++;
158 }
159 return result;
160 }
161 #endif
162
163 static const char *
_nc_viswbuf2n(int bufnum,const wchar_t * buf,int len)164 _nc_viswbuf2n(int bufnum, const wchar_t *buf, int len)
165 {
166 const char *vbuf;
167 char *tp;
168 wchar_t c;
169
170 if (buf == 0)
171 return ("(null)");
172
173 if (len < 0)
174 len = (int) wcslen(buf);
175
176 #ifdef TRACE
177 vbuf = tp = _nc_trace_buf(bufnum, WideLen(len));
178 #else
179 {
180 static char *mybuf[2];
181 mybuf[bufnum] = typeRealloc(char, WideLen(len), mybuf[bufnum]);
182 vbuf = tp = mybuf[bufnum];
183 }
184 #endif
185 if (tp != 0) {
186 *tp++ = D_QUOTE;
187 while ((--len >= 0) && (c = *buf++) != '\0') {
188 char temp[CCHARW_MAX + 80];
189 int j = wctomb(temp, c), k;
190 if (j <= 0) {
191 sprintf(temp, "\\u%08X", (unsigned) c);
192 j = (int) strlen(temp);
193 }
194 for (k = 0; k < j; ++k) {
195 tp = _nc_vischar(tp, UChar(temp[k]));
196 }
197 }
198 *tp++ = D_QUOTE;
199 *tp++ = '\0';
200 } else {
201 vbuf = ("(_nc_viswbuf2n failed)");
202 }
203 return (vbuf);
204 }
205
206 NCURSES_EXPORT(const char *)
_nc_viswbuf2(int bufnum,const wchar_t * buf)207 _nc_viswbuf2(int bufnum, const wchar_t *buf)
208 {
209 return _nc_viswbuf2n(bufnum, buf, -1);
210 }
211
212 NCURSES_EXPORT(const char *)
_nc_viswbuf(const wchar_t * buf)213 _nc_viswbuf(const wchar_t *buf)
214 {
215 return _nc_viswbuf2(0, buf);
216 }
217
218 NCURSES_EXPORT(const char *)
_nc_viswbufn(const wchar_t * buf,int len)219 _nc_viswbufn(const wchar_t *buf, int len)
220 {
221 return _nc_viswbuf2n(0, buf, len);
222 }
223
224 /* this special case is used for wget_wstr() */
225 NCURSES_EXPORT(const char *)
_nc_viswibuf(const wint_t * buf)226 _nc_viswibuf(const wint_t *buf)
227 {
228 static wchar_t *mybuf;
229 static unsigned mylen;
230 unsigned n;
231
232 for (n = 0; buf[n] != 0; ++n) ;
233 if (mylen < ++n) {
234 mylen = n + 80;
235 if (mybuf != 0)
236 mybuf = typeRealloc(wchar_t, mylen, mybuf);
237 else
238 mybuf = typeMalloc(wchar_t, mylen);
239 }
240 for (n = 0; buf[n] != 0; ++n)
241 mybuf[n] = (wchar_t) buf[n];
242
243 return _nc_viswbuf2(0, mybuf);
244 }
245 #endif /* USE_WIDEC_SUPPORT */
246
247 /* use these functions for displaying parts of a line within a window */
248 NCURSES_EXPORT(const char *)
_nc_viscbuf2(int bufnum,const NCURSES_CH_T * buf,int len)249 _nc_viscbuf2(int bufnum, const NCURSES_CH_T * buf, int len)
250 {
251 char *result = _nc_trace_buf(bufnum, BUFSIZ);
252 int first;
253 const char *found;
254
255 if (result != 0) {
256 #if USE_WIDEC_SUPPORT
257 if (len < 0)
258 len = _nc_wchstrlen(buf);
259 #endif /* USE_WIDEC_SUPPORT */
260
261 /*
262 * Display one or more strings followed by attributes.
263 */
264 first = 0;
265 while (first < len) {
266 attr_t attr = AttrOf(buf[first]);
267 int last = len - 1;
268 int j;
269
270 for (j = first + 1; j < len; ++j) {
271 if (!SameAttrOf(buf[j], buf[first])) {
272 last = j - 1;
273 break;
274 }
275 }
276
277 result = _nc_trace_bufcat(bufnum, l_brace);
278 result = _nc_trace_bufcat(bufnum, d_quote);
279 for (j = first; j <= last; ++j) {
280 found = _nc_altcharset_name(attr, (chtype) CharOf(buf[j]));
281 if (found != 0) {
282 result = _nc_trace_bufcat(bufnum, found);
283 attr &= ~A_ALTCHARSET;
284 } else
285 #if USE_WIDEC_SUPPORT
286 if (!isWidecExt(buf[j])) {
287 PUTC_DATA;
288
289 PUTC_INIT;
290 for (PUTC_i = 0; PUTC_i < CCHARW_MAX; ++PUTC_i) {
291 int k;
292
293 PUTC_ch = buf[j].chars[PUTC_i];
294 if (PUTC_ch == L'\0')
295 break;
296 PUTC_n = (int) wcrtomb(PUTC_buf, buf[j].chars[PUTC_i], &PUT_st);
297 if (PUTC_n <= 0)
298 break;
299 for (k = 0; k < PUTC_n; k++) {
300 char temp[80];
301 _nc_vischar(temp, UChar(PUTC_buf[k]));
302 result = _nc_trace_bufcat(bufnum, temp);
303 }
304 }
305 }
306 #else
307 {
308 char temp[80];
309 _nc_vischar(temp, UChar(buf[j]));
310 result = _nc_trace_bufcat(bufnum, temp);
311 }
312 #endif /* USE_WIDEC_SUPPORT */
313 }
314 result = _nc_trace_bufcat(bufnum, d_quote);
315 if (attr != A_NORMAL) {
316 result = _nc_trace_bufcat(bufnum, " | ");
317 result = _nc_trace_bufcat(bufnum, _traceattr2(bufnum + 20, attr));
318 }
319 result = _nc_trace_bufcat(bufnum, r_brace);
320 first = last + 1;
321 }
322 }
323 return result;
324 }
325
326 NCURSES_EXPORT(const char *)
_nc_viscbuf(const NCURSES_CH_T * buf,int len)327 _nc_viscbuf(const NCURSES_CH_T * buf, int len)
328 {
329 return _nc_viscbuf2(0, buf, len);
330 }
331 #endif /* TRACE */
332