From 121c63e35e667a841380f4d405cc47ce0f50b2e9 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?P=C5=99emysl=20Eric=20Janouch?= Date: Sat, 11 Dec 2021 22:51:52 +0100 Subject: Add a basic tiffinfo utility Also fix a few TIFF-related issues. --- tools/tiffinfo.c | 79 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 tools/tiffinfo.c (limited to 'tools/tiffinfo.c') diff --git a/tools/tiffinfo.c b/tools/tiffinfo.c new file mode 100644 index 0000000..da629c6 --- /dev/null +++ b/tools/tiffinfo.c @@ -0,0 +1,79 @@ +// +// tiffinfo.c: acquire information about TIFF files in JSON format +// +// Copyright (c) 2021, Přemysl Eric Janouch +// +// Permission to use, copy, modify, and/or distribute this software for any +// purpose with or without fee is hereby granted. +// +// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY +// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION +// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN +// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. +// + +#include "info.h" + +#include + +#include +#include +#include +#include + +// This is essentially the same as jpeginfo.c, but we only have an Exif segment. +// TODO(p): Photoshop data and ICC profiles also have their tag, +// they're not currently processed. + +static jv +do_file(const char *filename, jv o) +{ + const char *err = NULL; + FILE *fp = fopen(filename, "rb"); + if (!fp) { + err = strerror(errno); + goto error; + } + + uint8_t *data = NULL, buf[256 << 10]; + size_t n, len = 0; + while ((n = fread(buf, sizeof *buf, sizeof buf / sizeof *buf, fp))) { + data = realloc(data, len + n); + memcpy(data + len, buf, n); + len += n; + } + if (ferror(fp)) { + err = strerror(errno); + goto error_read; + } + + o = parse_exif(o, data, len); + +error_read: + fclose(fp); + free(data); +error: + if (err) + o = add_error(o, err); + return o; +} + +int +main(int argc, char *argv[]) +{ + // XXX: Can't use `xargs -P0`, there's a risk of non-atomic writes. + // Usage: find . -iname *.png -print0 | xargs -0 ./pnginfo + for (int i = 1; i < argc; i++) { + const char *filename = argv[i]; + + jv o = jv_object(); + o = jv_object_set(o, jv_string("filename"), jv_string(filename)); + o = do_file(filename, o); + jv_dumpf(o, stdout, 0 /* Might consider JV_PRINT_SORTED. */); + fputc('\n', stdout); + } + return 0; +} -- cgit v1.2.3