| 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 | |
| 23 | /* gobal variables */ |
| 24 | |
| 25 | char *progname = NULL; |
| 26 | |
| 27 | /* help function */ |
| 28 | |
| 29 | void usage (int ret) |
| 30 | { |
| 31 | FILE *fd = ret ? stderr : stdout; |
| 32 | fprintf (fd, "usage: %s [-i file] [-h] [-m k&r|ansi|c99] [-o file] [-v]\n", progname); |
| 33 | fprintf (fd, " -i : input file\n"); |
| 34 | fprintf (fd, " -h : help message\n"); |
| 35 | fprintf (fd, " -m : indent mode\n"); |
| 36 | fprintf (fd, " -o : output file\n"); |
| 37 | fprintf (fd, " -v : verbose level (%d)\n", verbose); |
| 38 | |
| 39 | exit (ret); |
| 40 | } |
| 41 | |
| 42 | /* indent function */ |
| 43 | |
| 44 | int indent (FILE *fin, FILE *fout) { |
| 45 | char buffer[BUFFERSIZE + 1] = {0}; |
| 46 | |
| 47 | char *pt = buffer; |
| 48 | while (!feof (fin)) { |
| 49 | int nb = fread (pt, 1, BUFFERSIZE - (pt - buffer), fin); |
| 50 | VERBOSE (DEBUG, fprintf (stdout, "buffer: %d\n", nb)); |
| 51 | pt = buffer; |
| 52 | int i = 0; |
| 53 | while (pt[i] != '\0') { |
| 54 | if (pt[i++] == '\n') { |
| 55 | pt[i - 1] = 0; |
| 56 | |
| 57 | /* process line */ |
| 58 | char *line = pt; |
| 59 | VERBOSE (DEBUG, fprintf (stdout, "line: %d\n", strlen (line))); |
| 60 | VERBOSE (DEBUG, fprintf (stdout, "out: %s\n", line)); |
| 61 | int k = 0; |
| 62 | int begin = 0; |
| 63 | while (line[k] != '\0') { |
| 64 | switch (line[k]) { |
| 65 | case ' ': |
| 66 | case '\t': |
| 67 | if (begin) trailing++; |
| 68 | break; |
| 69 | default: |
| 70 | begin = 0; |
| 71 | |
| 72 | pt += i; |
| 73 | i = 0; |
| 74 | } |
| 75 | } |
| 76 | /* copy end buffer */ |
| 77 | int j = 0; |
| 78 | if (pt - buffer < BUFFERSIZE) { |
| 79 | for (i = pt - buffer; i < BUFFERSIZE; i++) { |
| 80 | buffer[j++] = *pt++; |
| 81 | } |
| 82 | } |
| 83 | pt = buffer + j; |
| 84 | } |
| 85 | |
| 86 | /* close all */ |
| 87 | fclose (fin); |
| 88 | fclose (fout); |
| 89 | |
| 90 | return 0; |
| 91 | } |
| 92 | |
| 93 | /* main function */ |
| 94 | |
| 95 | int main (int argc, char *argv[]) |
| 96 | { |
| 97 | char *input = NULL; |
| 98 | char *mode = "ansi"; |
| 99 | char *output = NULL; |
| 100 | |
| 101 | /* get basename */ |
| 102 | char *pt = progname = argv[0]; |
| 103 | while (*pt) { |
| 104 | if ((*pt == '/') || (*pt == '\\')) { |
| 105 | progname = pt + 1; |
| 106 | } |
| 107 | pt++; |
| 108 | } |
| 109 | |
| 110 | int c; |
| 111 | while ((c = getopt(argc, argv, "i:hm:o:v:")) != EOF) { |
| 112 | switch (c) { |
| 113 | case 'i': |
| 114 | input = optarg; |
| 115 | break; |
| 116 | case 'm': |
| 117 | mode = optarg; |
| 118 | break; |
| 119 | case 'o': |
| 120 | output = optarg; |
| 121 | break; |
| 122 | case 'v': |
| 123 | verbose = atoi (optarg); |
| 124 | break; |
| 125 | case 'h': |
| 126 | default: |
| 127 | usage (c != 'h'); |
| 128 | } |
| 129 | } |
| 130 | if (argc - optind != 0) { |
| 131 | fprintf (stderr, "%s: invalid option -- %s\n", progname, argv[optind]); |
| 132 | usage (1); |
| 133 | } |
| 134 | |
| 135 | /* check input */ |
| 136 | FILE *fin = NULL; |
| 137 | if (input) { |
| 138 | fin = fopen (input, "rb"); |
| 139 | if (!fin) { |
| 140 | VERBOSE (ERROR, fprintf (stderr, "error: can't open file '%s'\n", input)); |
| 141 | } |
| 142 | } else { |
| 143 | fin = stdin; |
| 144 | } |
| 145 | |
| 146 | /* check output */ |
| 147 | FILE *fout = NULL; |
| 148 | if (output) { |
| 149 | fout = fopen (input, "wb"); |
| 150 | if (!fout) { |
| 151 | VERBOSE (ERROR, fprintf (stderr, "error: can't open file '%s'\n", output)); |
| 152 | fclose (fin); |
| 153 | } |
| 154 | } else { |
| 155 | fout = stdout; |
| 156 | } |
| 157 | |
| 158 | return indent (fin, fout); |
| 159 | } |
| 160 | |
| 161 | // test: indent.exe -h |
| 162 | // test: indent.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 163 | // test: indent.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }' |
| 164 | // test: indent.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }' |
| 165 | |
| 166 | /* vim: set ts=4 sw=4 et: */ |