From a9b34ca3f27ed0b3c10effd3fb884936d9b02485 Mon Sep 17 00:00:00 2001
From: Přemysl Eric Janouch <p@janouch.name>
Date: Mon, 5 Jun 2023 17:52:58 +0200
Subject: Unite most info tools into just one binary

Turn this into more of an fq alternative, when used with jq.

Also don't say that TIFF files are Exif.
---
 tools/webpinfo.c | 133 -------------------------------------------------------
 1 file changed, 133 deletions(-)
 delete mode 100644 tools/webpinfo.c

(limited to 'tools/webpinfo.c')

diff --git a/tools/webpinfo.c b/tools/webpinfo.c
deleted file mode 100644
index f3417f9..0000000
--- a/tools/webpinfo.c
+++ /dev/null
@@ -1,133 +0,0 @@
-//
-// webpinfo.c: acquire information about WebP files in JSON format
-//
-// Copyright (c) 2021, Přemysl Eric Janouch <p@janouch.name>
-//
-// 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 <jv.h>
-
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-// --- WebP --------------------------------------------------------------------
-// https://github.com/webmproject/libwebp/blob/master/doc/webp-container-spec.txt
-// https://github.com/webmproject/libwebp/blob/master/doc/webp-lossless-bitstream-spec.txt
-// https://datatracker.ietf.org/doc/html/rfc6386
-//
-// Pretty versions, hopefully not outdated:
-// https://developers.google.com/speed/webp/docs/riff_container
-// https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification
-
-static jv
-parse_webp(jv o, const uint8_t *p, size_t len)
-{
-	// libwebp won't let us simply iterate over all chunks, so handroll it.
-	if (len < 12 || memcmp(p, "RIFF", 4) || memcmp(p + 8, "WEBP", 4))
-		return add_error(o, "not a WEBP file");
-
-	// TODO(p): This can still be parseable.
-	// TODO(p): Warn on trailing data.
-	uint32_t size = u32le(p + 4);
-	if (8 + size < len)
-		return add_error(o, "truncated file");
-
-	const uint8_t *end = p + 8 + size;
-	p += 12;
-
-	jv chunks = jv_array();
-	while (p < end) {
-		if (end - p < 8) {
-			o = add_warning(o, "framing mismatch");
-			printf("%ld", end - p);
-			break;
-		}
-
-		uint32_t chunk_size = u32le(p + 4);
-		uint32_t chunk_advance = (chunk_size + 1) & ~1;
-		if (p + 8 + chunk_advance > end) {
-			o = add_warning(o, "runaway chunk payload");
-			break;
-		}
-
-		char fourcc[5] = "";
-		memcpy(fourcc, p, 4);
-		chunks = jv_array_append(chunks, jv_string(fourcc));
-		p += 8;
-
-		// TODO(p): Decode VP8 and VP8L chunk metadata.
-		if (!strcmp(fourcc, "EXIF"))
-			o = parse_exif(o, p, chunk_size);
-		if (!strcmp(fourcc, "ICCP"))
-			o = parse_icc(o, p, chunk_size);
-		p += chunk_advance;
-	}
-	return jv_set(o, jv_string("chunks"), chunks);
-}
-
-// --- I/O ---------------------------------------------------------------------
-
-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_webp(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[])
-{
-	(void) parse_psir;
-
-	// 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;
-}
-- 
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