1 /* $OpenBSD: trace.c,v 1.16 2010/09/07 19:58:09 marco Exp $ */
3 * SPDX-License-Identifier: BSD-2-Clause
5 * Copyright (c) 2001 Marc Espie.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
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.
16 * THIS SOFTWARE IS PROVIDED BY THE OPENBSD PROJECT AND CONTRIBUTORS
17 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBSD
20 * PROJECT OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include <sys/cdefs.h>
29 __FBSDID("$FreeBSD$");
43 #define TRACE_EXPANSION 2
45 #define TRACE_FILENAME 8
46 #define TRACE_LINENO 16
49 #define TRACE_NEWFILE 128 /* not implemented yet */
50 #define TRACE_INPUT 256 /* not implemented yet */
52 static unsigned int letter_to_flag(int);
53 static void print_header(struct input_file *);
54 static int frame_level(void);
57 unsigned int trace_flags = TRACE_QUOTE | TRACE_EXPANSION;
60 trace_file(const char *name)
63 if (traceout && traceout != stderr)
65 traceout = fopen(name, "w");
67 err(1, "can't open %s", name);
77 return TRACE_EXPANSION;
85 return TRACE_FILENAME;
102 set_trace_flags(const char *s)
107 if (*s == '+' || *s == '-')
110 f |= letter_to_flag(*s++);
130 for (framep = fp, level = 0; framep != 0;
131 level++,framep = mstack[framep-3].sfra)
137 print_header(struct input_file *inp)
139 fprintf(traceout, "m4trace:");
140 if (trace_flags & TRACE_FILENAME)
141 fprintf(traceout, "%s:", inp->name);
142 if (trace_flags & TRACE_LINENO)
143 fprintf(traceout, "%lu:", inp->lineno);
144 fprintf(traceout, " -%d- ", frame_level());
145 if (trace_flags & TRACE_ID)
146 fprintf(traceout, "id %lu: ", expansion_id);
150 trace(const char *argv[], int argc, struct input_file *inp)
155 if (trace_flags & TRACE_CONT) {
156 fprintf(traceout, "%s ...\n", argv[1]);
159 fprintf(traceout, "%s", argv[1]);
160 if ((trace_flags & TRACE_ARGS) && argc > 2) {
166 for (i = 2; i < argc; i++) {
167 fprintf(traceout, "%s%s%s%s", delim,
168 (trace_flags & TRACE_QUOTE) ? lquote : "",
170 (trace_flags & TRACE_QUOTE) ? rquote : "");
175 fprintf(traceout, "%c", RPAREN);
177 if (trace_flags & TRACE_CONT) {
178 fprintf(traceout, " -> ???\n");
180 fprintf(traceout, argc > 2 ? "%s(...)" : "%s", argv[1]);
182 if (trace_flags & TRACE_EXPANSION)
183 return buffer_mark();
185 fprintf(traceout, "\n");
191 finish_trace(size_t mark)
193 fprintf(traceout, " -> ");
194 if (trace_flags & TRACE_QUOTE)
195 fprintf(traceout, "%s", lquote);
196 dump_buffer(traceout, mark);
197 if (trace_flags & TRACE_QUOTE)
198 fprintf(traceout, "%s", rquote);
199 fprintf(traceout, "\n");