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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4680 | right-hear | 1 | /* |
| 2 | * pdfshow -- the ultimate pdf debugging tool |
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| 3 | */ |
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| 4 | |||
| 5 | #include "fitz.h" |
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| 6 | #include "mupdf.h" |
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| 7 | |||
| 8 | static pdf_xref *xref = NULL; |
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| 9 | static int showbinary = 0; |
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| 10 | static int showdecode = 1; |
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| 11 | static int showcolumn; |
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| 12 | |||
| 13 | void die(fz_error error) |
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| 14 | { |
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| 15 | fz_catch(error, "aborting"); |
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| 16 | if (xref) |
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| 17 | pdf_free_xref(xref); |
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| 18 | exit(1); |
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| 19 | } |
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| 20 | |||
| 21 | static void usage(void) |
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| 22 | { |
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| 23 | fprintf(stderr, "usage: pdfshow [options] file.pdf [grepable] [xref] [trailer] [pagetree] [object numbers]\n"); |
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| 24 | fprintf(stderr, "\t-b\tprint streams as binary data\n"); |
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| 25 | fprintf(stderr, "\t-e\tprint encoded streams (don't decode)\n"); |
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| 26 | fprintf(stderr, "\t-p\tpassword\n"); |
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| 27 | exit(1); |
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| 28 | } |
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| 29 | |||
| 30 | static void showtrailer(void) |
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| 31 | { |
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| 32 | if (!xref) |
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| 33 | die(fz_throw("no file specified")); |
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| 34 | printf("trailer\n"); |
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| 35 | fz_debug_obj(xref->trailer); |
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| 36 | printf("\n"); |
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| 37 | } |
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| 38 | |||
| 39 | static void showxref(void) |
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| 40 | { |
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| 41 | if (!xref) |
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| 42 | die(fz_throw("no file specified")); |
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| 43 | pdf_debug_xref(xref); |
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| 44 | printf("\n"); |
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| 45 | } |
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| 46 | |||
| 47 | static void showpagetree(void) |
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| 48 | { |
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| 49 | fz_error error; |
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| 50 | fz_obj *ref; |
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| 51 | int count; |
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| 52 | int i; |
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| 53 | |||
| 54 | if (!xref) |
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| 55 | die(fz_throw("no file specified")); |
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| 56 | |||
| 57 | if (!xref->page_len) |
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| 58 | { |
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| 59 | error = pdf_load_page_tree(xref); |
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| 60 | if (error) |
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| 61 | die(fz_rethrow(error, "cannot load page tree")); |
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| 62 | } |
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| 63 | |||
| 64 | count = pdf_count_pages(xref); |
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| 65 | for (i = 0; i < count; i++) |
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| 66 | { |
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| 67 | ref = xref->page_refs[i]; |
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| 68 | printf("page %d = %d %d R\n", i + 1, fz_to_num(ref), fz_to_gen(ref)); |
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| 69 | } |
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| 70 | printf("\n"); |
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| 71 | } |
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| 72 | |||
| 73 | static void showsafe(unsigned char *buf, int n) |
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| 74 | { |
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| 75 | int i; |
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| 76 | for (i = 0; i < n; i++) { |
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| 77 | if (buf[i] == '\r' || buf[i] == '\n') { |
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| 78 | putchar('\n'); |
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| 79 | showcolumn = 0; |
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| 80 | } |
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| 81 | else if (buf[i] < 32 || buf[i] > 126) { |
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| 82 | putchar('.'); |
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| 83 | showcolumn ++; |
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| 84 | } |
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| 85 | else { |
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| 86 | putchar(buf[i]); |
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| 87 | showcolumn ++; |
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| 88 | } |
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| 89 | if (showcolumn == 79) { |
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| 90 | putchar('\n'); |
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| 91 | showcolumn = 0; |
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| 92 | } |
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| 93 | } |
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| 94 | } |
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| 95 | |||
| 96 | static void showstream(int num, int gen) |
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| 97 | { |
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| 98 | fz_error error; |
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| 99 | fz_stream *stm; |
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| 100 | unsigned char buf[2048]; |
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| 101 | int n; |
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| 102 | |||
| 103 | showcolumn = 0; |
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| 104 | |||
| 105 | if (showdecode) |
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| 106 | error = pdf_open_stream(&stm, xref, num, gen); |
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| 107 | else |
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| 108 | error = pdf_open_raw_stream(&stm, xref, num, gen); |
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| 109 | if (error) |
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| 110 | die(error); |
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| 111 | |||
| 112 | while (1) |
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| 113 | { |
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| 114 | n = fz_read(stm, buf, sizeof buf); |
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| 115 | if (n < 0) |
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| 116 | die(n); |
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| 117 | if (n == 0) |
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| 118 | break; |
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| 119 | if (showbinary) |
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| 120 | fwrite(buf, 1, n, stdout); |
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| 121 | else |
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| 122 | showsafe(buf, n); |
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| 123 | } |
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| 124 | |||
| 125 | fz_close(stm); |
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| 126 | } |
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| 127 | |||
| 128 | static void showobject(int num, int gen) |
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| 129 | { |
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| 130 | fz_error error; |
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| 131 | fz_obj *obj; |
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| 132 | |||
| 133 | if (!xref) |
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| 134 | die(fz_throw("no file specified")); |
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| 135 | |||
| 136 | error = pdf_load_object(&obj, xref, num, gen); |
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| 137 | if (error) |
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| 138 | die(error); |
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| 139 | |||
| 140 | if (pdf_is_stream(xref, num, gen)) |
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| 141 | { |
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| 142 | if (showbinary) |
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| 143 | { |
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| 144 | showstream(num, gen); |
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| 145 | } |
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| 146 | else |
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| 147 | { |
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| 148 | printf("%d %d obj\n", num, gen); |
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| 149 | fz_debug_obj(obj); |
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| 150 | printf("stream\n"); |
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| 151 | showstream(num, gen); |
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| 152 | printf("endstream\n"); |
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| 153 | printf("endobj\n\n"); |
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| 154 | } |
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| 155 | } |
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| 156 | else |
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| 157 | { |
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| 158 | printf("%d %d obj\n", num, gen); |
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| 159 | fz_debug_obj(obj); |
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| 160 | printf("endobj\n\n"); |
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| 161 | } |
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| 162 | |||
| 163 | fz_drop_obj(obj); |
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| 164 | } |
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| 165 | |||
| 166 | static void showgrep(char *filename) |
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| 167 | { |
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| 168 | fz_error error; |
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| 169 | fz_obj *obj; |
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| 170 | int i; |
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| 171 | |||
| 172 | for (i = 0; i < xref->len; i++) |
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| 173 | { |
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| 174 | if (xref->table[i].type == 'n' || xref->table[i].type == 'o') |
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| 175 | { |
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| 176 | error = pdf_load_object(&obj, xref, i, 0); |
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| 177 | if (error) |
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| 178 | die(error); |
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| 179 | |||
| 180 | fz_sort_dict(obj); |
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| 181 | |||
| 182 | printf("%s:%d: ", filename, i); |
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| 183 | fz_fprint_obj(stdout, obj, 1); |
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| 184 | |||
| 185 | fz_drop_obj(obj); |
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| 186 | } |
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| 187 | } |
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| 188 | |||
| 189 | printf("%s:trailer: ", filename); |
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| 190 | fz_fprint_obj(stdout, xref->trailer, 1); |
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| 191 | } |
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| 192 | |||
| 193 | int main(int argc, char **argv) |
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| 194 | { |
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| 195 | char *password = NULL; /* don't throw errors if encrypted */ |
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| 196 | char *filename; |
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| 197 | fz_error error; |
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| 198 | int c; |
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| 199 | |||
| 200 | while ((c = fz_getopt(argc, argv, "p:be")) != -1) |
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| 201 | { |
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| 202 | switch (c) |
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| 203 | { |
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| 204 | case 'p': password = fz_optarg; break; |
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| 205 | case 'b': showbinary = 1; break; |
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| 206 | case 'e': showdecode = 0; break; |
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| 207 | default: usage(); break; |
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| 208 | } |
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| 209 | } |
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| 210 | |||
| 211 | if (fz_optind == argc) |
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| 212 | usage(); |
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| 213 | |||
| 214 | filename = argv[fz_optind++]; |
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| 215 | error = pdf_open_xref(&xref, filename, password); |
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| 216 | if (error) |
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| 217 | die(fz_rethrow(error, "cannot open document: %s", filename)); |
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| 218 | |||
| 219 | if (fz_optind == argc) |
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| 220 | showtrailer(); |
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| 221 | |||
| 222 | while (fz_optind < argc) |
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| 223 | { |
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| 224 | switch (argv[fz_optind][0]) |
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| 225 | { |
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| 226 | case 't': showtrailer(); break; |
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| 227 | case 'x': showxref(); break; |
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| 228 | case 'p': showpagetree(); break; |
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| 229 | case 'g': showgrep(filename); break; |
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| 230 | default: showobject(atoi(argv[fz_optind]), 0); break; |
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| 231 | } |
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| 232 | fz_optind++; |
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| 233 | } |
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| 234 | |||
| 235 | pdf_free_xref(xref); |
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| 236 | |||
| 237 | fz_flush_warnings(); |
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| 238 | |||
| 239 | return 0; |
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| 240 | } |