Commit | Line | Data |
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a1ab98f9 LM |
1 | /* depend: */ |
2 | /* cflags: */ | |
3 | /* linker: debug.o */ | |
4 | ||
5 | #include <assert.h> | |
6 | #include <getopt.h> | |
7 | #include <malloc.h> | |
8 | #include <stdio.h> | |
9 | #include <stdlib.h> | |
10 | #include <string.h> | |
11 | ||
12 | #include "debug.h" | |
13 | ||
14 | /* macros */ | |
15 | ||
16 | #define CEIL(x, y) (((x) + (y) - 1) / (y)) | |
17 | #define MIN(x, y) (((x) < (y)) ? (x) : (y)) | |
18 | #define MAX(x, y) (((x) > (y)) ? (x) : (y)) | |
19 | ||
20 | //#define BUFFERSIZE 4096 | |
21 | #define BUFFERSIZE 256 | |
22 | #define NBCOLS 8 | |
23 | ||
24 | /* gobal variables */ | |
25 | ||
26 | char *progname = NULL; | |
27 | ||
28 | /* help function */ | |
29 | ||
30 | void usage (int ret) | |
31 | { | |
32 | FILE *fd = ret ? stderr : stdout; | |
33 | fprintf (fd, "usage: %s [-i file] [-h] [-n nbcols] [-o file] [-v]\n", progname); | |
5272fae8 LM |
34 | fprintf (fd, " -i: input file\n"); |
35 | fprintf (fd, " -h: help message\n"); | |
36 | fprintf (fd, " -n: number of columns\n"); | |
37 | fprintf (fd, " -e: commands\n"); | |
38 | fprintf (fd, " -o: output file\n"); | |
39 | fprintf (fd, " -v: verbose level (%d)\n", verbose); | |
40 | fprintf (fd, "\n"); | |
41 | fprintf (fd, "commands: [/hstr/|0xaddr] [a hstr] [d nb|-] [i hstr] [p nb|-] [s/h1/h2/[g]]\n"); | |
42 | fprintf (fd, " 0x: move to address addr\n"); | |
43 | fprintf (fd, " //: move to hexa stringi hstr\n"); | |
44 | fprintf (fd, " a : append hexa string hstr to current address\n"); | |
45 | fprintf (fd, " d : delete nb bytes (- until end file)\n"); | |
46 | fprintf (fd, " i : insert hexa string hstr to current address\n"); | |
47 | fprintf (fd, " p : print nb bytes (- until end file)\n"); | |
48 | fprintf (fd, " s : substitute h1 by h2 (g for globally)\n"); | |
a1ab98f9 LM |
49 | |
50 | exit (ret); | |
51 | } | |
52 | ||
53 | /* get number of digits */ | |
54 | ||
55 | int getnbdigits (long int l) { | |
56 | int n = 0; | |
57 | while (l) { | |
58 | n += 2; | |
59 | l /= 256; | |
60 | } | |
61 | return n; | |
62 | } | |
63 | ||
64 | /* print a line */ | |
65 | ||
66 | void printline (char *buffer, int nbcols, int nb, int addr, int nbdigits) { | |
67 | int i; | |
68 | ||
69 | printf ("0x%0*x:", nbdigits, addr); | |
70 | for (i = 0; i < nb; i++) { | |
71 | printf (" %02x", buffer[i]); | |
72 | } | |
73 | for (i = nb; i < nbcols; i++) { | |
74 | printf (" "); | |
75 | } | |
76 | printf (" "); | |
77 | for (i = 0; i < nb; i++) { | |
78 | char c = buffer[i]; | |
79 | printf ("%c", (c > 31) && (c < 127) ? c : '.'); | |
80 | } | |
81 | printf ("\n"); | |
82 | } | |
83 | ||
84 | /* indent function */ | |
85 | ||
5272fae8 | 86 | int hexdump (FILE *fin, int nbcols, int len) { |
a1ab98f9 LM |
87 | char buffer[BUFFERSIZE] = {0}; |
88 | int i; | |
89 | ||
90 | char *pt = buffer; | |
91 | ||
92 | /* get file size */ | |
93 | int nbdigits = 0; | |
94 | if (fin != stdin) { | |
95 | fseek (fin, 0 , SEEK_END); | |
96 | long int filesize = ftell (fin); | |
97 | fseek (fin, 0 , SEEK_SET); | |
98 | nbdigits = getnbdigits (filesize); | |
99 | } else { | |
100 | nbdigits = 6; | |
101 | } | |
102 | ||
103 | int addr = 0; | |
104 | int nb = 0; | |
105 | while (!feof (fin)) { | |
5272fae8 LM |
106 | int nbtoread = BUFFERSIZE - (pt - buffer); |
107 | if ((len > 0) && (nbtoread > len)) { | |
108 | nbtoread = len; | |
109 | } | |
110 | int nbread = fread (pt, 1, nbtoread, fin); | |
111 | if (len > 0) { | |
112 | len -= nbread; | |
113 | } | |
114 | nb += nbread; | |
a1ab98f9 LM |
115 | pt = buffer; |
116 | ||
117 | /* print line */ | |
118 | while ((nb - (int)(pt - buffer)) / nbcols > 0) { | |
119 | printline (pt, nbcols, nbcols, addr, nbdigits); | |
120 | pt += nbcols; | |
121 | addr += nbcols; | |
122 | } | |
123 | ||
124 | /* copy end buffer */ | |
125 | nb -= pt - buffer; | |
126 | for (i = 0; i < nb; i++) { | |
127 | buffer[i] = pt[i]; | |
128 | } | |
129 | pt = buffer + nb; | |
5272fae8 LM |
130 | |
131 | /* end partial reading */ | |
132 | if (len == 0) { | |
133 | break; | |
134 | } | |
a1ab98f9 LM |
135 | } |
136 | ||
137 | /* last line */ | |
138 | if (nb > 0) { | |
139 | printline (buffer, nbcols, nb, addr, nbdigits); | |
140 | } | |
141 | ||
142 | return 0; | |
143 | } | |
144 | ||
145 | /* main function */ | |
146 | ||
147 | int main (int argc, char *argv[]) | |
148 | { | |
5272fae8 | 149 | int rc = 0; |
a1ab98f9 LM |
150 | char *input = NULL; |
151 | char *output = NULL; | |
152 | int nbcols = NBCOLS; | |
5272fae8 LM |
153 | char *commands = NULL; |
154 | int printlen = -1; | |
a1ab98f9 LM |
155 | |
156 | /* get basename */ | |
157 | char *pt = progname = argv[0]; | |
158 | while (*pt) { | |
159 | if ((*pt == '/') || (*pt == '\\')) { | |
160 | progname = pt + 1; | |
161 | } | |
162 | pt++; | |
163 | } | |
164 | ||
165 | int c; | |
5272fae8 | 166 | while ((c = getopt(argc, argv, "e:i:hn:o:v:")) != EOF) { |
a1ab98f9 LM |
167 | switch (c) { |
168 | case 'i': | |
169 | input = optarg; | |
170 | break; | |
5272fae8 LM |
171 | case 'e': |
172 | if (commands == NULL) { | |
173 | commands = optarg; | |
174 | } else { | |
175 | strcat (commands, " "); | |
176 | strcat (commands, optarg); | |
177 | } | |
178 | break; | |
a1ab98f9 LM |
179 | case 'n': |
180 | nbcols = atoi (optarg); | |
181 | break; | |
182 | case 'o': | |
183 | output = optarg; | |
184 | break; | |
185 | case 'v': | |
186 | verbose = atoi (optarg); | |
187 | break; | |
188 | case 'h': | |
189 | default: | |
190 | usage (c != 'h'); | |
191 | } | |
192 | } | |
193 | if (argc - optind != 0) { | |
194 | fprintf (stderr, "%s: invalid option -- %s\n", progname, argv[optind]); | |
195 | usage (1); | |
196 | } | |
197 | ||
198 | /* check input */ | |
199 | FILE *fin = NULL; | |
200 | if (input) { | |
201 | fin = fopen (input, "rb"); | |
202 | if (!fin) { | |
203 | VERBOSE (ERROR, fprintf (stderr, "error: can't open file '%s'\n", input)); | |
5272fae8 | 204 | return 1; |
a1ab98f9 LM |
205 | } |
206 | } else { | |
207 | fin = stdin; | |
208 | } | |
209 | ||
210 | /* check output */ | |
211 | FILE *fout = NULL; | |
212 | if (output) { | |
213 | fout = fopen (input, "wb"); | |
214 | if (!fout) { | |
215 | VERBOSE (ERROR, fprintf (stderr, "error: can't open file '%s'\n", output)); | |
216 | fclose (fin); | |
5272fae8 | 217 | return 1; |
a1ab98f9 LM |
218 | } |
219 | } else { | |
220 | fout = stdout; | |
221 | } | |
222 | ||
5272fae8 LM |
223 | if (commands == NULL) { |
224 | hexdump (fin, nbcols, -1); | |
225 | } else { | |
226 | VERBOSE (DEBUG, printf ("commands: %s\n", commands)); | |
227 | while ((*commands != '\0') && (rc == 0)) { | |
228 | switch (*commands++) { | |
229 | case ' ': | |
230 | case '\t': | |
231 | break; | |
232 | ||
233 | case '/': /* read patern */ | |
234 | break; | |
235 | ||
236 | case '0': /* read address */ | |
237 | break; | |
238 | ||
239 | case 'a': /* append mode */ | |
240 | break; | |
241 | ||
242 | case 'd': /* delete mode */ | |
243 | break; | |
244 | ||
245 | case 'i': /* insert mode */ | |
246 | break; | |
247 | ||
248 | case 'p': /* print mode */ | |
249 | printlen = -1; | |
250 | while (*commands != '\0') { | |
251 | if ((*commands == ' ') || (*commands == '\t')) { | |
252 | commands++; | |
253 | } else if ((*commands >= '0') && (*commands <= '9')) { | |
254 | printlen = strtol (commands, &commands, 10); | |
255 | break; | |
256 | } else if (*commands == '-') { | |
257 | printlen = -1; | |
258 | commands++; | |
259 | break; | |
260 | } else { | |
261 | VERBOSE (ERROR, fprintf (stderr, "unkown print lenght (%s)\n", commands)); | |
262 | rc = 1; | |
263 | break; | |
264 | } | |
265 | } | |
266 | if (rc == 0) hexdump (fin, nbcols, printlen); | |
267 | break; | |
268 | ||
269 | case 's': /* substitute mode */ | |
270 | break; | |
271 | ||
272 | default: | |
273 | VERBOSE (ERROR, fprintf (stderr, "unknown command (%c)\n", commands[-1])); | |
274 | rc = 1; | |
275 | } | |
276 | } | |
277 | } | |
a1ab98f9 LM |
278 | |
279 | /* close all */ | |
5272fae8 LM |
280 | if (fin) fclose (fin); |
281 | if (fout) fclose (fout); | |
a1ab98f9 | 282 | |
5272fae8 | 283 | return rc; |
a1ab98f9 LM |
284 | } |
285 | ||
286 | // test: hexdump.exe -h | |
287 | // test: hexdump.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }' | |
288 | // test: hexdump.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }' | |
289 | // test: hexdump.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }' | |
290 | // test: hexdump.exe -i hexdump.c | grep -q '0x[0-9a-f]*: ' | |
291 | // test: hexdump.exe -i hexdump.c -n 3|head -2|tail -1| grep '0x0003: 64 65 70 dep' | |
292 | ||
293 | /* vim: set ts=4 sw=4 et: */ |