| 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 TABSIZE 2 |
| 23 | |
| 24 | /* type definition */ |
| 25 | |
| 26 | typedef enum { |
| 27 | e_unknown = 0, |
| 28 | e_ansi, |
| 29 | e_kr |
| 30 | } cmode_t; |
| 31 | |
| 32 | /* gobal variables */ |
| 33 | |
| 34 | char *progname = NULL; |
| 35 | |
| 36 | /* help function */ |
| 37 | |
| 38 | void usage (int ret) |
| 39 | { |
| 40 | FILE *fd = ret ? stderr : stdout; |
| 41 | fprintf (fd, "usage: %s [-i file] [-h] [-m k&r|ansi|c99] [-o file] [-v]\n", progname); |
| 42 | fprintf (fd, " -i : input file\n"); |
| 43 | fprintf (fd, " -h : help message\n"); |
| 44 | fprintf (fd, " -m : indent mode\n"); |
| 45 | fprintf (fd, " -o : output file\n"); |
| 46 | fprintf (fd, " -v : verbose level (%d)\n", verbose); |
| 47 | |
| 48 | exit (ret); |
| 49 | } |
| 50 | |
| 51 | /* indent function */ |
| 52 | |
| 53 | int indent (FILE *fin, FILE *fout, cmode_t cmode) { |
| 54 | char bufin[BUFFERSIZE + 1] = {0}; |
| 55 | char bufout[BUFFERSIZE * TABSIZE + 1] = {0}; |
| 56 | size_t i, nb; |
| 57 | size_t nbindent = 0; |
| 58 | int begin = 1; |
| 59 | int parent = 0; |
| 60 | int comment = 0; |
| 61 | int newline = 0; |
| 62 | int string = 0; |
| 63 | int character = 0; |
| 64 | int special = 0; |
| 65 | |
| 66 | while (!feof (fin)) { |
| 67 | memset (bufin, 0, sizeof (bufin)); |
| 68 | memset (bufout, 0, sizeof (bufout)); |
| 69 | |
| 70 | /* read file */ |
| 71 | nb = fread (bufin, 1, BUFFERSIZE, fin); |
| 72 | VERBOSE (DEBUG, fprintf (stdout, "buffer in: %d\n", nb)); |
| 73 | if (errno != 0) { |
| 74 | VERBOSE (ERROR, fprintf (stderr, "can't read file (%d)\n", errno)); |
| 75 | exit (1); |
| 76 | } |
| 77 | |
| 78 | /* process line */ |
| 79 | char *ptin = bufin; |
| 80 | char *ptout = bufout; |
| 81 | while (*ptin != '\0') { |
| 82 | VERBOSE (DEBUG, fprintf (stdout, "caracter: %c\n", *ptin)); |
| 83 | |
| 84 | /* manage comment */ |
| 85 | if (comment > 0) { |
| 86 | if (((comment == 1) && (*ptin == '\n')) || |
| 87 | ((comment == 2) && ((*ptin == '*') && (ptin[1] == '/')))) { |
| 88 | comment = 0; |
| 89 | } |
| 90 | special = 0; |
| 91 | *ptout++ = *ptin++; |
| 92 | continue; |
| 93 | } |
| 94 | |
| 95 | /* manage indent */ |
| 96 | switch (*ptin) { |
| 97 | case '/': |
| 98 | comment = (ptin[1] == '/') ? 1 : (ptin[1] == '*') ? 2 : 0; |
| 99 | if (begin) { |
| 100 | for (i = 0; i < nbindent * TABSIZE; i++) { |
| 101 | *ptout++ = ' '; |
| 102 | } |
| 103 | begin = 0; |
| 104 | } |
| 105 | *ptout++ = *ptin; |
| 106 | break; |
| 107 | case ' ': |
| 108 | case '\t': |
| 109 | if (begin == 0) { |
| 110 | *ptout++ = *ptin; |
| 111 | } |
| 112 | break; |
| 113 | case '{': |
| 114 | *ptout++ = '\n'; |
| 115 | for (i = 0; i < nbindent * TABSIZE; i++) { |
| 116 | *ptout++ = ' '; |
| 117 | } |
| 118 | *ptout++ = *ptin; |
| 119 | *ptout++ = '\n'; |
| 120 | nbindent++; |
| 121 | newline = 1; |
| 122 | begin = 1; |
| 123 | break; |
| 124 | case '}': |
| 125 | *ptout++ = '\n'; |
| 126 | nbindent--; |
| 127 | for (i = 0; i < nbindent * TABSIZE; i++) { |
| 128 | *ptout++ = ' '; |
| 129 | } |
| 130 | *ptout++ = *ptin; |
| 131 | if (ptin[1] != ';') { |
| 132 | *ptout++ = '\n'; |
| 133 | } |
| 134 | newline = 1; |
| 135 | begin = 1; |
| 136 | break; |
| 137 | case ';': |
| 138 | *ptout++ = *ptin; |
| 139 | if (parent) { |
| 140 | break; |
| 141 | } |
| 142 | *ptout++ = '\n'; |
| 143 | newline = 1; |
| 144 | begin = 1; |
| 145 | break; |
| 146 | case '\n': |
| 147 | if (newline == 1) { |
| 148 | newline = 0; |
| 149 | } else { |
| 150 | *ptout++ = '\n'; |
| 151 | } |
| 152 | begin = 1; |
| 153 | break; |
| 154 | case '\r': |
| 155 | break; |
| 156 | default: |
| 157 | if ((*ptin == '"') && (!character) && (!special)) { |
| 158 | string ^= 1; |
| 159 | } |
| 160 | if ((*ptin == '\'') && (!string) && (!special)) { |
| 161 | character ^= 1; |
| 162 | } |
| 163 | if (begin) { |
| 164 | for (i = 0; i < nbindent * TABSIZE; i++) { |
| 165 | *ptout++ = ' '; |
| 166 | } |
| 167 | begin = 0; |
| 168 | } |
| 169 | *ptout++ = *ptin; |
| 170 | } |
| 171 | special = (*ptin == '\\'); |
| 172 | parent += (*ptin == '(') ? +1 : (*ptin == ')') ? -1 : 0; |
| 173 | ptin++; |
| 174 | } |
| 175 | ptout = '\0'; |
| 176 | |
| 177 | /* write file */ |
| 178 | VERBOSE (DEBUG, fprintf (stdout, "buffer out: %d\n", strlen (bufout))); |
| 179 | ptout = bufout; |
| 180 | while ((nb = fwrite (ptout, 1, strlen (ptout), fout)) != strlen (ptout)) { |
| 181 | VERBOSE (DEBUG, fprintf (stdout, "buffer out: %d/%d\n", nb, strlen (ptout))); |
| 182 | if (errno != 0) { |
| 183 | VERBOSE (ERROR, fprintf (stderr, "can't write file (%d)\n", errno)); |
| 184 | exit (1); |
| 185 | } |
| 186 | ptout += nb; |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | /* close all */ |
| 191 | fclose (fin); |
| 192 | fclose (fout); |
| 193 | |
| 194 | return 0; |
| 195 | } |
| 196 | |
| 197 | /* main function */ |
| 198 | |
| 199 | int main (int argc, char *argv[]) |
| 200 | { |
| 201 | cmode_t cmode = e_unknown; |
| 202 | char *input = NULL; |
| 203 | char *mode = "ansi"; |
| 204 | char *output = NULL; |
| 205 | |
| 206 | /* get basename */ |
| 207 | char *pt = progname = argv[0]; |
| 208 | while (*pt) { |
| 209 | if ((*pt == '/') || (*pt == '\\')) { |
| 210 | progname = pt + 1; |
| 211 | } |
| 212 | pt++; |
| 213 | } |
| 214 | |
| 215 | int c; |
| 216 | while ((c = getopt(argc, argv, "i:hm:o:v:")) != EOF) { |
| 217 | switch (c) { |
| 218 | case 'i': |
| 219 | input = optarg; |
| 220 | break; |
| 221 | case 'm': |
| 222 | mode = optarg; |
| 223 | break; |
| 224 | case 'o': |
| 225 | output = optarg; |
| 226 | break; |
| 227 | case 'v': |
| 228 | verbose = atoi (optarg); |
| 229 | break; |
| 230 | case 'h': |
| 231 | default: |
| 232 | usage (c != 'h'); |
| 233 | } |
| 234 | } |
| 235 | if (argc - optind != 0) { |
| 236 | fprintf (stderr, "%s: invalid option -- %s\n", progname, argv[optind]); |
| 237 | usage (1); |
| 238 | } |
| 239 | |
| 240 | /* check input */ |
| 241 | FILE *fin = NULL; |
| 242 | if (input) { |
| 243 | fin = fopen (input, "rb"); |
| 244 | if (!fin) { |
| 245 | VERBOSE (ERROR, fprintf (stderr, "error: can't open file '%s'\n", input)); |
| 246 | } |
| 247 | } else { |
| 248 | fin = stdin; |
| 249 | } |
| 250 | |
| 251 | /* check output */ |
| 252 | FILE *fout = NULL; |
| 253 | if (output) { |
| 254 | fout = fopen (output, "wb"); |
| 255 | if (!fout) { |
| 256 | VERBOSE (ERROR, fprintf (stderr, "error: can't open file '%s'\n", output)); |
| 257 | fclose (fin); |
| 258 | } |
| 259 | } else { |
| 260 | fout = stdout; |
| 261 | } |
| 262 | |
| 263 | /* check mode */ |
| 264 | if (strcmp (mode, "ansi") == 0) { |
| 265 | cmode = e_ansi; |
| 266 | } else if (strcmp (mode, "k&r") == 0) { |
| 267 | cmode = e_kr; |
| 268 | } else { |
| 269 | VERBOSE (ERROR, fprintf (stderr, "error: mode '%s' unknown\n", mode)); |
| 270 | } |
| 271 | |
| 272 | return indent (fin, fout, cmode); |
| 273 | } |
| 274 | |
| 275 | // test: indent.exe -h |
| 276 | // test: indent.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 277 | // test: indent.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }' |
| 278 | // test: indent.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 279 | |
| 280 | /* vim: set ts=4 sw=4 et: */ |