From 69745478f5f4a1fcf0a5b88ae66ffda9d8e81fca Mon Sep 17 00:00:00 2001 From: Neil Date: Fri, 11 Jun 2021 20:23:40 -0700 Subject: [PATCH] Subfolder. --- Makefile | 193 ++++++++++++++-- copying.txt | 15 -- gifbar.c | 329 --------------------------- gpl.txt | 619 --------------------------------------------------- readme.md | 11 + readme.txt | 8 - src/gifbar.c | 304 +++++++++++++++++++++++++ 7 files changed, 489 insertions(+), 990 deletions(-) delete mode 100644 copying.txt delete mode 100644 gifbar.c delete mode 100644 gpl.txt create mode 100644 readme.md delete mode 100644 readme.txt create mode 100644 src/gifbar.c diff --git a/Makefile b/Makefile index 3459b71..aad24a5 100644 --- a/Makefile +++ b/Makefile @@ -1,26 +1,181 @@ -PROJ := gifbar -PROJw := $(PROJ).exe -FILES := gifbar -BDIR := bin -OBJS := $(patsubst %,$(BDIR)/%.o,$(FILES)) -SRCS := $(patsubst %,%.c,$(FILES)) -H := $(patsubst %,%.h,$(FILES)) +# GNU Make 3.81; MacOSX gcc 4.2.1; MacOSX MinGW 4.3.0 -CC := gcc -OF := -Wall -O3 -fasm -fomit-frame-pointer -ffast-math -funroll-loops -fasm -fomit-frame-pointer -ffast-math -funroll-loops -pedantic -ansi -CF := -ansi +# https://stackoverflow.com/questions/18136918/how-to-get-current-relative-directory-of-your-makefile +mkfile_path := $(abspath $(lastword $(MAKEFILE_LIST))) +current_dir := $(notdir $(patsubst %/,%,$(dir $(mkfile_path)))) -CCw := /usr/local/i386-mingw32-4.3.0/bin/i386-mingw32-gcc -OFw := -Wall -O3 -fasm -fomit-frame-pointer -ffast-math -funroll-loops -fasm -fomit-frame-pointer -ffast-math -funroll-loops -pedantic -mwindows +project := $(current_dir) -default: $(BDIR)/$(PROJ) +# dirs +src := src +test := test +build := build +bin := bin +backup := backup +doc := doc +media := media +#lemon := lemon +PREFIX := /usr/local -$(BDIR)/$(PROJ): $(OBJS) - $(CC) $(OF) $(CF) $^ -o $@ +# files in $(bin) +install := $(project)-`date +%Y-%m-%d` -$(BDIR)/%.o: %.c - $(CC) $(OF) -c $< -o $@ +# extra stuff we should back up +extra := $(project).xcodeproj + +# John Graham-Cumming: rwildcard is a recursive wildcard +rwildcard=$(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) \ +$(filter $(subst *,%,$2),$d)) + +java_srcs := $(call rwildcard, $(src), *.java) +c_srcs := $(call rwildcard, $(src), *.c) +h_srcs := $(call rwildcard, $(src), *.h) +c_re_srcs := $(call rwildcard, $(src), *.c.re) +c_rec_srcs := $(call rwildcard, $(src), *.c.re_c) +y_srcs := $(call rwildcard, $(src), *.y) +c_tests := $(call rwildcard, $(test), *.c) +h_tests := $(call rwildcard, $(test), *.h) +icons := $(call rwildcard, $(media), *.ico) + +# combinations +all_h := $(h_srcs) $(h_tests) +all_srcs := $(java_srcs) $(c_srcs) $(c_re_srcs) $(c_rec_srcs) $(y_srcs) +all_tests := $(c_tests) +all_icons := $(icons) + +java_class := $(patsubst $(src)/%.java, $(build)/%.class, $(java_srcs)) +c_objs := $(patsubst $(src)/%.c, $(build)/%.o, $(c_srcs)) +# must not conflict, eg, foo.c.re and foo.c would go to the same thing +c_re_builds := $(patsubst $(src)/%.c.re, $(build)/%.c, $(c_re_srcs)) +c_rec_builds := $(patsubst $(src)/%.c.re_c, $(build)/%.c, $(c_rec_srcs)) +c_y_builds := $(patsubst $(src)/%.y, $(build)/%.c, $(y_srcs)) +# together .re/.re_c/.y +c_other_objs := $(patsubst $(build)/%.c, $(build)/%.o, $(c_re_builds) \ +$(c_rec_builds) $(c_y_builds)) +test_c_objs := $(patsubst $(test)/%.c, $(build)/$(test)/%.o, $(c_tests)) +html_docs := $(patsubst $(src)/%.c, $(doc)/%.html, $(c_srcs)) + +cdoc := cdoc +re2c := re2c +mkdir := mkdir -p +cat := cat +zip := zip +bison := bison +#lemon := lemon + +CC := clang #gcc +CF := -Wall -Wextra -pedantic -Weverything -Wno-comma -Wno-logical-op-parentheses \ +-Wno-parentheses -Wno-poison-system-directories -Wno-documentation-unknown-command \ +-Wno-shift-op-parentheses \ +-O3 -ffast-math -funroll-loops \ +-ansi # -std=c99 -mwindows +OF := -O3 # -framework OpenGL -framework GLUT or -lglut -lGLEW + +# Jakob Borg and Eldar Abusalimov +# $(ARGS) is all the extra arguments; $(BRGS) is_all_the_extra_arguments +EMPTY := +SPACE := $(EMPTY) $(EMPTY) +ifeq (backup, $(firstword $(MAKECMDGOALS))) + ARGS := $(wordlist 2,$(words $(MAKECMDGOALS)),$(MAKECMDGOALS)) + BRGS := $(subst $(SPACE),_,$(ARGS)) + ifneq (,$(BRGS)) + BRGS := -$(BRGS) + endif + $(eval $(ARGS):;@:) +endif + +###### +# compiles the programme by default + +default: $(bin)/$(project) + # . . . success; executable is in $(bin)/$(project) + +docs: $(html_docs) + +# linking +$(bin)/$(project): $(c_objs) $(c_other_objs) $(test_c_objs) + # linking rule + @$(mkdir) $(bin) + $(CC) $(OF) -o $@ $^ + +# compiling +#$(lemon)/$(bin)/$(lem): $(lemon)/$(src)/lemon.c +# # compiling lemon +# @$(mkdir) $(lemon)/$(bin) +# $(CC) $(CF) -o $@ $< + +$(c_objs): $(build)/%.o: $(src)/%.c $(all_h) + # c_objs rule + @$(mkdir) $(build) + $(CC) $(CF) -c -o $@ $< + +$(c_other_objs): $(build)/%.o: $(build)/%.c $(all_h) + # c_other_objs rule + $(CC) $(CF) -c -o $@ $< + +$(test_c_objs): $(build)/$(test)/%.o: $(test)/%.c $(all_h) + # test_c_objs rule + @$(mkdir) $(build) + @$(mkdir) $(build)/$(test) + $(CC) $(CF) -c -o $@ $< + +$(c_re_builds): $(build)/%: $(src)/%.re + # *.re build rule + @$(mkdir) $(build) + $(re2c) -W -T -o $@ $< + +$(c_rec_builds): $(build)/%: $(src)/%.re_c + # *.re_c (conditions) build rule + @$(mkdir) $(build) + $(re2c) -W -T -c -o $@ $< + +$(c_y_builds): $(build)/%.c: $(src)/%.y # $(lemon)/$(bin)/$(lem) + # .y rule + @$(mkdir) $(build) + $(bison) -o $@ $< + +$(html_docs): $(doc)/%.html: $(src)/%.c $(src)/%.h + # docs rule + @$(mkdir) $(doc) + cat $^ | $(cdoc) > $@ + +###### +# phoney targets + +.PHONY: setup clean backup icon install uninstall test docs -.PHONY: clean clean: - -rm $(OBJS) + -rm -f $(c_objs) $(test_c_objs) $(c_other_objs) $(c_re_builds) \ +$(c_rec_builds) $(html_docs) + -rm -rf $(bin)/$(test) + +backup: + @$(mkdir) $(backup) + $(zip) $(backup)/$(project)-`date +%Y-%m-%dT%H%M%S`$(BRGS).zip \ +readme.txt Makefile $(all_h) $(all_srcs) $(all_tests) $(all_icons) + +icon: default + # . . . setting icon on a Mac. + cp $(media)/$(icon) $(bin)/$(icon) + -sips --addIcon $(bin)/$(icon) + -DeRez -only icns $(bin)/$(icon) > $(bin)/$(RSRC) + -Rez -append $(bin)/$(RSRC) -o $(bin)/$(project) + -SetFile -a C $(bin)/$(project) + +setup: default icon + @$(mkdir) $(bin)/$(install) + cp $(bin)/$(project) readme.txt $(bin)/$(install) + rm -f $(bin)/$(install)-MacOSX.dmg + # or rm -f $(BDIR)/$(INST)-Win32.zip + hdiutil create $(bin)/$(install)-MacOSX.dmg -volname "$(project)" -srcfolder $(bin)/$(install) + # or zip $(BDIR)/$(INST)-Win32.zip -r $(BDIR)/$(INST) + rm -R $(bin)/$(install) + +install: default + @$(mkdir) -p $(DESTDIR)$(PREFIX)/bin + cp $(bin)/$(project) $(DESTDIR)$(PREFIX)/bin/$(project) + +uninstall: + rm -f $(DESTDIR)$(PREFIX)/bin/$(project) + +docs: $(html_docs) diff --git a/copying.txt b/copying.txt deleted file mode 100644 index c85884e..0000000 --- a/copying.txt +++ /dev/null @@ -1,15 +0,0 @@ -Copyright (C) 2007 Neil Edelman - -gifbar is free software: you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation, either version 3 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with gifbar (see gnu.txt.) If not, see -. diff --git a/gifbar.c b/gifbar.c deleted file mode 100644 index 8f6951d..0000000 --- a/gifbar.c +++ /dev/null @@ -1,329 +0,0 @@ -/* Copyright 2007 Neil Edelman, distributed under the terms of the - GNU General Public License, see copying.txt */ - -/* I was looking though old code, and the one is genius, if a do say so myself. - I cleaned it up. September 3, 2007 - -Neil - -Multi-byte fields are LSB first -header: 6 bytes (one header per data stream) - Signature: 3 bytes, 'GIF' - Version: 3 bytes, '87a' or '89a' -logical screen descriptor (one per data stream, follow header) - Logical screen width: 2 bytes - Logical screen height: 2 bytes - Packed Data: 1 byte - Global colour table flag: 1 bit (global table follows?) - Colour resolution - 1: 3 bits - Sort flag: 1 bit (important colours first? 0 in 87a) - Size of global colour table: 3 bits (size is 2^(x+1)) - Background colour: 1 byte - Pixel aspect ratio: 1 byte (0 = ignore 0 in 87a) -global colour table: 3 * 2 ^ (size of table + 1) bytes if table flag - RGB: 3 bytes -[ -image descriptor: (one per image) - Image separator: 1 byte 0x2C - Image left position: 2 bytes - Image top position: 2 bytes - Image width: 2 bytes - Image height: 2 bytes - Packed data: - Local colour table?: 1 bit - Interlace?: 1 bit - Sorted palette?: 1 bit - Reserved = 0: 2 bits - Local colour table size: 3 bits -local colour table: 3 * 2 ^ (size of table + 1) bytes if table flag - RGB: 3 bytes -code size: 1 byte -repeated data sub-blocks: terminated by zero-size sub-block - Size: 1 byte - Data: Size bytes -] -trailer: (one per data stream) - GIF trailer: 1 byte, 0x3B ';' -*/ - -#include /* getenv(), atoi() */ -#include /* printf(), putchar(), fwrite() */ -#include /* strcmp() */ - -/* constants */ -static const char *programme = "gifbar"; -static const char *year = "2007"; -static const int versionMajor = 1; -static const int versionMinor = 0; - -typedef struct tagCode Code; - -struct tagCode { - Code *child; - Code *next; - unsigned char suffix; - unsigned long code; - unsigned int code_size; -}; - -static void print_gif(unsigned char parm); - -int main(int argc, char **argv) { - char *env; - - if(!(env = getenv("REQUEST_METHOD")) - || (strcmp(env, "get") && strcmp(env, "GET")) - || !(env = getenv("QUERY_STRING"))) { - printf("Status: 400 Missing required argument.\n\n"); - fprintf(stderr, "Usage: gifbar?\n"); - fprintf(stderr, "Number is in the range of 0-255. This is a CGI gif percentage bar."); - fprintf(stderr, "Version %d.%d.\n\n", versionMajor, versionMinor); - fprintf(stderr, "%s Copyright %s Neil Edelman\n", programme, year); - fprintf(stderr, "This program comes with ABSOLUTELY NO WARRANTY.\n"); - fprintf(stderr, "This is free software, and you are welcome to redistribute it\n"); - fprintf(stderr, "under certain conditions; see copying.txt.\n\n"); - return EXIT_FAILURE; - } - printf("Content-type: image/gif\n\n"); - /* may need to set STDOUT to binary mode to avoid line feed translation - if your OS sucks (you know who you are!) - if(setmode(stdout, O_BINARY) == -1) return 1; */ - print_gif(atoi(env)); - - return EXIT_SUCCESS; -} - -static void print_gif(unsigned char parm) { - /* this is the gif binary output; mine, you could use whatever and paste it - here from the hex editor, just make it 00-FF as it goes across the image */ - static unsigned char image_data[] = { - 0x08, 0xFE, 0x00, 0x5B, 0x38, 0x18, 0x80, 0xC0, 0x02, 0x8A, 0x18, 0x39, - 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0x58, 0xEC, 0x8A, 0xC3, 0x49, 0xD8, 0x16, 0xB7, 0xA8, 0x05, 0x2E, 0x86, - 0xC1, 0x8C, 0x67, 0x28, 0x63, 0x18, 0xC3, 0x20, 0xC6, 0x2F, 0x32, 0xCF, - 0x0B, 0x5E, 0xDC, 0x46, 0x18, 0xBF, 0x38, 0x06, 0x33, 0x92, 0x71, 0x0C, - 0x67, 0x10, 0x23, 0x15, 0x9F, 0x08, 0xC5, 0x2B, 0x9C, 0x71, 0x8D, 0x61, - 0x94, 0xE6, 0xDC, 0xDD, 0x58, 0xC6, 0x2A, 0xE2, 0xAD, 0x1E, 0xAB, 0xFA, - 0x1B, 0x19, 0xC0, 0xA8, 0x45, 0xE5, 0x5F, 0x01, 0x0B, 0x70, 0x0D, 0x23, - 0x1C, 0xF1, 0xA8, 0x47, 0x40, 0x00 }; - int i, r, g, b, colour_change; - - /* GIF header */ - printf("GIF"); /* signature */ - printf("87a"); /* version */ - /* logical screen descriptor */ - putchar(0); putchar(1); /* width */ - putchar(8); putchar(0); /* height */ - putchar(0xF7); /* 256 colours with table to follow */ - putchar(0); /* background colour */ - putchar(0); /* reserved (aspect ratio in 89a) */ - /* global colour table - do'n't mess the colours up, just the colour table; - like the old trick with 256-colour games where they do animation with - colour cycling */ - r = 0xF0, g = 0x00, b = 0x32; /* aiming for 0x50 0xA0 0xC0 */ - if(parm < 40) { - colour_change = (40 - parm) << 1; - r -= colour_change; - g += colour_change; - b += colour_change; - } - for(i = 0; i <= 0xFF; i++) { - if(i >= parm - 40 && i < parm + 40) { - r -= 2; g += 2; b += 2; - } - putchar(r); putchar(g); putchar(b); - } - /* image descriptor */ - putchar(','); /* image separator */ - putchar(0); putchar(0); /* image left position */ - putchar(0); putchar(0); /* image top position */ - putchar(0); putchar(1); /* image width */ - putchar(8); putchar(0); /* image height */ - putchar(0); /* packed flags - use global table */ - /* image data block, *ptr, size, ntimes, stream */ - if(fwrite(image_data, sizeof(char), sizeof(image_data), stdout) != sizeof(image_data)) - { perror("stdout"); } - putchar(0); /* terminating empty sub-block */ - /* GIF trailer */ - putchar(';'); /* trailer */ -} diff --git a/gpl.txt b/gpl.txt deleted file mode 100644 index bc08fe2..0000000 --- a/gpl.txt +++ /dev/null @@ -1,619 +0,0 @@ - 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Limitation of Liability. - - IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING -WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS -THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY -GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE -USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF -DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD -PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), -EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF -SUCH DAMAGES. - - 17. Interpretation of Sections 15 and 16. - - If the disclaimer of warranty and limitation of liability provided -above cannot be given local legal effect according to their terms, -reviewing courts shall apply local law that most closely approximates -an absolute waiver of all civil liability in connection with the -Program, unless a warranty or assumption of liability accompanies a -copy of the Program in return for a fee. diff --git a/readme.md b/readme.md new file mode 100644 index 0000000..794c77a --- /dev/null +++ b/readme.md @@ -0,0 +1,11 @@ +# gifbar # + +This is a CGI gif percentage (well, per-0xFF) bar using +hard-coded data and colour-cycling. + +Usage: gifbar?[0-255] + +## License ## + +1997, 2007 Neil Edelman, distributed under the terms of +the [MIT License](https://opensource.org/licenses/MIT). diff --git a/readme.txt b/readme.txt deleted file mode 100644 index d2b62fa..0000000 --- a/readme.txt +++ /dev/null @@ -1,8 +0,0 @@ -Copyright (C) 2007 Neil Edelman, see copying.txt. -neil dot edelman each mail dot mcgill dot ca - -Version 1.0. - -Usage: gifbar? - -Number is in the range of 0-255. This is a CGI gif percentage bar. diff --git a/src/gifbar.c b/src/gifbar.c new file mode 100644 index 0000000..c177767 --- /dev/null +++ b/src/gifbar.c @@ -0,0 +1,304 @@ +/** @license 1997, 2007 Neil Edelman, distributed under the terms of the + [GNU General Public License 3](https://opensource.org/licenses/GPL-3.0). + + CGI GET a single argument, a number from [0-255]. Outputs `image/gif` + of the progress bar in nice mottled style. */ + +/* I was looking though old code, and the one is genius. I cleaned it up. + September 3, 2007. + +Multi-byte fields are LSB first +header: 6 bytes (one header per data stream) + Signature: 3 bytes, 'GIF' + Version: 3 bytes, '87a' or '89a' +logical screen descriptor (one per data stream, follow header) + Logical screen width: 2 bytes + Logical screen height: 2 bytes + Packed Data: 1 byte + Global colour table flag: 1 bit (global table follows?) + Colour resolution - 1: 3 bits + Sort flag: 1 bit (important colours first? 0 in 87a) + Size of global colour table: 3 bits (size is 2^(x+1)) + Background colour: 1 byte + Pixel aspect ratio: 1 byte (0 = ignore 0 in 87a) +global colour table: 3 * 2 ^ (size of table + 1) bytes if table flag + RGB: 3 bytes +[ +image descriptor: (one per image) + Image separator: 1 byte 0x2C + Image left position: 2 bytes + Image top position: 2 bytes + Image width: 2 bytes + Image height: 2 bytes + Packed data: + Local colour table?: 1 bit + Interlace?: 1 bit + Sorted palette?: 1 bit + Reserved = 0: 2 bits + Local colour table size: 3 bits +local colour table: 3 * 2 ^ (size of table + 1) bytes if table flag + RGB: 3 bytes +code size: 1 byte +repeated data sub-blocks: terminated by zero-size sub-block + Size: 1 byte + Data: Size bytes +] +trailer: (one per data stream) + GIF trailer: 1 byte, 0x3B ';' +*/ + +#include /* getenv(), atoi() */ +#include /* printf(), putchar(), fwrite() */ +#include /* strcmp() */ +#include + +/** Prints the GIF of `parm` per-`[0, 255]` on `stdout`. */ +static void print_gif(unsigned char parm) { + /* Binary `gif` output that I made up with a painting programme; could + replace with anything, make it `00-FF` as it goes across the image. */ + static unsigned char table[256 * 3]; + static const unsigned char header[] = { + /* signature */ 'G', 'I', 'F', + /* version */ '8', '7', 'a', + /* logical screen descriptor */ + /* width */ 0, 1, + /* height */ 8, 0, + /* 256 colours with table to follow */ 0xF7, + /* background colour */ 0, + /* reserved (aspect ratio in 89a) */ 0 + }, descriptor_data_end[] = { + /* image descriptor */ + /* image separator */ ',', + /* image left position */ 0, 0, + /* image top position */ 0, 0, + /* image width */ 0, 1, + /* image height */ 8, 0, + /* packed flags - use global table */ 0, + /* image data block, *ptr, size, ntimes, stream */ + 0x08, 0xFE, 0x00, 0x5B, 0x38, 0x18, 0x80, 0xC0, 0x02, 0x8A, 0x18, 0x39, + 0x8A, 0x20, 0xA9, 0xB1, 0xA1, 0xC2, 0x05, 0x0C, 0x16, 0x24, 0x38, 0x60, + 0xD0, 0xE0, 0x41, 0x84, 0x09, 0x15, 0x34, 0x98, 0xE8, 0xC1, 0xA4, 0x09, + 0x13, 0x23, 0x3A, 0x5E, 0x98, 0xF8, 0xD0, 0x01, 0x04, 0x8B, 0x24, 0x56, + 0x9C, 0x10, 0x21, 0x72, 0x85, 0x4C, 0x19, 0x30, 0x54, 0x96, 0xF0, 0xA0, + 0x81, 0x83, 0xC7, 0x8E, 0x21, 0x59, 0xB4, 0x14, 0xD9, 0x81, 0xE3, 0xC6, + 0x0D, 0x1C, 0x39, 0x72, 0xE8, 0xD8, 0xD1, 0x83, 0x67, 0x8E, 0x1E, 0x3D, + 0x74, 0x00, 0xE5, 0x11, 0x44, 0x88, 0x10, 0x22, 0x47, 0x8E, 0x00, 0xE1, + 0xC1, 0xA3, 0xC7, 0x8F, 0x1F, 0x42, 0x9E, 0xB8, 0xC9, 0xA3, 0xA6, 0x4B, + 0x95, 0x27, 0x4B, 0x9A, 0x40, 0xB9, 0xD2, 0x65, 0xCC, 0x18, 0x2E, 0x5F, + 0x3B, 0x42, 0xB1, 0xD2, 0x45, 0x0C, 0x1A, 0x39, 0x7F, 0x18, 0x05, 0x22, + 0xB3, 0xA5, 0x0B, 0x98, 0x32, 0x79, 0x22, 0x59, 0x42, 0x14, 0x67, 0x4D, + 0x9B, 0x3C, 0x89, 0x1A, 0xED, 0x49, 0x43, 0x86, 0x4D, 0x20, 0x49, 0x96, + 0x3A, 0x95, 0x2A, 0x95, 0x09, 0x50, 0x1C, 0x37, 0x6E, 0xDE, 0xC0, 0x89, + 0x03, 0xE7, 0x8D, 0x65, 0x38, 0x74, 0xF2, 0x08, 0x7A, 0xE4, 0x89, 0x95, + 0x2A, 0x4A, 0x83, 0x0C, 0x85, 0x8A, 0xC5, 0x8A, 0xD4, 0xA9, 0x59, 0xB6, + 0x50, 0x71, 0x62, 0x65, 0xAB, 0x15, 0xAA, 0x55, 0xB2, 0x62, 0xB5, 0x5A, + 0xC5, 0x2A, 0x96, 0xAE, 0x61, 0xC6, 0x90, 0x25, 0x43, 0x76, 0x2C, 0x19, + 0xB3, 0x66, 0xCE, 0x9C, 0x3D, 0x73, 0x86, 0xCC, 0xD7, 0xAF, 0x65, 0xD2, + 0xA4, 0x2D, 0xFB, 0xB5, 0x8B, 0x17, 0xB1, 0x67, 0xD2, 0xA0, 0x45, 0xB3, + 0x96, 0x2D, 0x5B, 0x35, 0x64, 0xBD, 0x7A, 0x0D, 0x4B, 0xD6, 0xAC, 0xDA, + 0xB6, 0x66, 0xB1, 0x64, 0xFE, 0x39, 0xCB, 0x16, 0x2C, 0x15, 0xA8, 0x4F, + 0xA0, 0x42, 0x89, 0x2A, 0xC5, 0x8A, 0x56, 0x2E, 0x5C, 0xB4, 0x66, 0xAB, + 0x52, 0xC5, 0xEA, 0x95, 0x2D, 0x5D, 0xC2, 0xB2, 0xB5, 0x13, 0x38, 0x80, + 0xC0, 0x02, 0x08, 0x14, 0x78, 0xA0, 0x03, 0x10, 0x27, 0x50, 0x70, 0xD1, + 0x04, 0x12, 0x3C, 0xC0, 0xC0, 0x82, 0x0E, 0x3C, 0x20, 0x01, 0x05, 0x17, + 0x70, 0x80, 0x02, 0x11, 0x4D, 0x10, 0xB1, 0x43, 0x0D, 0x31, 0xA0, 0xE0, + 0x81, 0x06, 0x1C, 0x9C, 0x10, 0x84, 0x11, 0x31, 0xA8, 0x10, 0x03, 0x14, + 0x62, 0x8C, 0xA1, 0x85, 0x12, 0x3F, 0xDC, 0x20, 0x03, 0x0D, 0x37, 0xD4, + 0x90, 0x03, 0x14, 0x53, 0xFC, 0x80, 0x03, 0x0D, 0x31, 0xC8, 0x50, 0x03, + 0x0E, 0x40, 0xED, 0xC0, 0x83, 0x0E, 0x3E, 0xED, 0xB0, 0x43, 0x0E, 0x3D, + 0x62, 0x25, 0xC4, 0x10, 0x47, 0x20, 0x31, 0x84, 0x4D, 0x3C, 0xF8, 0xE0, + 0x03, 0x10, 0x4D, 0xAC, 0xF1, 0x46, 0x15, 0x4C, 0x24, 0x81, 0x44, 0x12, + 0x4A, 0x28, 0xC1, 0xC4, 0x58, 0x5E, 0x78, 0xE5, 0x44, 0x47, 0x4F, 0x44, + 0x31, 0x45, 0x15, 0x56, 0x68, 0x51, 0x46, 0x20, 0x7C, 0x7C, 0x51, 0x45, + 0x15, 0x59, 0x8C, 0xE1, 0x47, 0x24, 0x8A, 0xC8, 0x61, 0x06, 0x1A, 0x6E, + 0xD4, 0xF1, 0x47, 0x22, 0x7C, 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0xAC, + 0xE1, 0x0B, 0x5F, 0x58, 0x03, 0x22, 0x1E, 0x61, 0x07, 0x39, 0xAC, 0xC9, + 0x10, 0x6F, 0x28, 0x03, 0x19, 0xCC, 0x90, 0x06, 0x21, 0x52, 0x94, 0xA2, + 0x6D, 0x78, 0x43, 0xDA, 0xFC, 0xB0, 0x89, 0x50, 0x18, 0x42, 0x0F, 0x20, + 0xA5, 0x83, 0x1F, 0x1E, 0xC1, 0xC8, 0x55, 0x24, 0xEB, 0x3D, 0xB4, 0xC0, + 0xC5, 0x2E, 0x74, 0x01, 0x0B, 0x4F, 0x68, 0xC2, 0x14, 0xB4, 0x30, 0x05, + 0x23, 0x68, 0x1A, 0x88, 0x9A, 0x16, 0x22, 0x11, 0x8F, 0xC8, 0xE9, 0x24, + 0x60, 0xC1, 0x1D, 0x64, 0x04, 0x03, 0x18, 0xB2, 0xF0, 0x44, 0x26, 0x16, + 0x1C, 0x0A, 0x5B, 0x08, 0x43, 0x17, 0xB1, 0x81, 0x85, 0x2C, 0xB6, 0x53, + 0x0B, 0x53, 0x88, 0x62, 0x14, 0xAE, 0x58, 0x46, 0x33, 0x64, 0x71, 0x8A, + 0x51, 0xB0, 0x22, 0x19, 0xD1, 0x9A, 0x56, 0xB5, 0x40, 0x11, 0x49, 0x46, + 0xBE, 0xE2, 0x16, 0xBD, 0xB8, 0xC5, 0x6C, 0x5A, 0x01, 0x53, 0x59, 0xEC, + 0x02, 0x1A, 0xEA, 0xA0, 0xC7, 0x59, 0x1D, 0xC0, 0x02, 0x22, 0x20, 0x01, + 0x08, 0x2C, 0xE0, 0x40, 0x05, 0x96, 0x47, 0x01, 0x81, 0x5D, 0x00, 0x02, + 0xF4, 0xB2, 0xAB, 0x04, 0x34, 0xD0, 0x82, 0x24, 0x44, 0xA1, 0x08, 0x22, + 0x89, 0xAC, 0x0B, 0x50, 0x10, 0x82, 0x0F, 0x84, 0x20, 0x05, 0x39, 0x90, + 0x82, 0x61, 0xC1, 0xB2, 0x03, 0x17, 0xAC, 0xC0, 0x05, 0x32, 0x88, 0xC1, + 0x0A, 0x54, 0xE0, 0x82, 0x1C, 0x4C, 0x61, 0x0A, 0x39, 0x78, 0x81, 0x0B, + 0xC6, 0x0C, 0x83, 0x15, 0xD9, 0x2F, 0x9A, 0x2B, 0xC2, 0xC1, 0xFE, 0x0E, + 0x78, 0x04, 0x5A, 0x20, 0x24, 0x85, 0x07, 0x43, 0x48, 0xC2, 0x11, 0x4E, + 0x9B, 0x24, 0x02, 0x76, 0xA1, 0x0D, 0x5E, 0xC9, 0x02, 0x16, 0xA0, 0x60, + 0x25, 0x2A, 0x60, 0xC1, 0x0A, 0x27, 0x84, 0x42, 0x13, 0x96, 0xB0, 0x41, + 0x9C, 0x81, 0xA1, 0x30, 0x7A, 0x28, 0x84, 0x22, 0xFA, 0xB0, 0x86, 0x33, + 0x9C, 0xC1, 0x0C, 0x61, 0xF0, 0x42, 0x19, 0x04, 0x81, 0x88, 0x36, 0x94, + 0x01, 0x0D, 0x79, 0x78, 0x44, 0x21, 0xD4, 0x00, 0xDD, 0x35, 0x24, 0x02, + 0x12, 0x76, 0x80, 0xC3, 0x1D, 0x22, 0x21, 0x89, 0x3B, 0xA8, 0xE1, 0x4D, + 0x6A, 0x60, 0x43, 0x38, 0x21, 0x13, 0xCE, 0x37, 0x28, 0x6A, 0x10, 0xA1, + 0x18, 0xC5, 0x22, 0x00, 0xA1, 0x87, 0x3C, 0xEC, 0x61, 0x10, 0x91, 0x08, + 0x45, 0x29, 0x4C, 0x01, 0x9B, 0x5C, 0xD8, 0x62, 0x57, 0xBD, 0xD8, 0x85, + 0x8A, 0x57, 0x11, 0xDF, 0x53, 0x48, 0xA2, 0x11, 0xC8, 0x46, 0x63, 0x1A, + 0x31, 0x81, 0x09, 0x4B, 0x6C, 0x82, 0x16, 0xC8, 0x68, 0x06, 0xE7, 0x6C, + 0x31, 0x0B, 0x53, 0x90, 0x62, 0x14, 0xA5, 0x68, 0x85, 0x2F, 0x0C, 0x8C, + 0x8B, 0x5B, 0xE0, 0x22, 0x17, 0xBF, 0x50, 0x46, 0x2F, 0x4A, 0xD1, 0x89, + 0x4F, 0xB0, 0x22, 0x56, 0xB3, 0x40, 0x45, 0x29, 0x5C, 0xC1, 0x0C, 0x6C, + 0x04, 0x03, 0x15, 0xE7, 0x49, 0x8F, 0x7A, 0x4E, 0xE1, 0x8A, 0x5A, 0xF0, + 0xE2, 0x17, 0xB6, 0x78, 0xEA, 0x2B, 0x5E, 0x11, 0x0B, 0x5A, 0xFC, 0x62, + 0x1B, 0xEF, 0xA8, 0xC7, 0x59, 0x1F, 0x00, 0x03, 0xD8, 0x1E, 0xC1, 0x07, + 0x2E, 0xD8, 0xC0, 0xBD, 0x2E, 0xC0, 0xA1, 0x0C, 0x44, 0xA0, 0x01, 0x0D, + 0x52, 0xDE, 0x04, 0x3E, 0xC0, 0x83, 0x29, 0x5C, 0x41, 0x0A, 0x4A, 0x10, + 0x02, 0xCB, 0x72, 0x50, 0x4B, 0x0F, 0x88, 0xC0, 0x05, 0x43, 0x88, 0x02, + 0x3D, 0xE8, 0xAF, 0xD0, 0x04, 0x1F, 0xD4, 0x40, 0x7F, 0x35, 0x98, 0x41, + 0x8D, 0x6E, 0x20, 0x84, 0x7D, 0xA6, 0x28, 0x64, 0x1A, 0x13, 0xCA, 0x8F, + 0xEC, 0xC7, 0x22, 0x1D, 0x14, 0x05, 0x47, 0x3E, 0x18, 0xC2, 0x10, 0x82, + 0x30, 0x04, 0x25, 0x94, 0xF3, 0x07, 0x07, 0x0C, 0x42, 0x12, 0xBE, 0xC0, + 0x86, 0x2F, 0x6C, 0xC1, 0xE8, 0x88, 0x6D, 0x42, 0x15, 0xB8, 0x10, 0x86, + 0x31, 0x84, 0x61, 0x0B, 0x53, 0x70, 0x82, 0xCF, 0xA6, 0xA0, 0x05, 0x31, + 0xA4, 0x41, 0x51, 0x79, 0x38, 0xC4, 0x21, 0xF2, 0x60, 0xE9, 0xE2, 0x7E, + 0xE1, 0x0C, 0x84, 0x58, 0x04, 0x1D, 0xCE, 0x06, 0x88, 0x47, 0x0C, 0xA2, + 0x0D, 0x64, 0x18, 0x43, 0x1B, 0x18, 0xB1, 0x89, 0x48, 0x14, 0xA2, 0x10, + 0x97, 0xE0, 0x44, 0x21, 0xE2, 0xA0, 0x6A, 0xC9, 0xC0, 0xE1, 0xEE, 0x6F, + 0x88, 0x4C, 0x1C, 0xEA, 0xD0, 0x07, 0x4A, 0xA8, 0x02, 0x6F, 0x95, 0x58, + 0xC4, 0xA5, 0x32, 0x81, 0x8A, 0x56, 0x9C, 0x42, 0x31, 0xB2, 0x38, 0xEA, + 0x2A, 0x38, 0xF9, 0x8B, 0x5E, 0xD8, 0xE2, 0x15, 0x2E, 0xC6, 0x05, 0x2C, + 0x58, 0xEC, 0x8A, 0xC3, 0x49, 0xD8, 0x16, 0xB7, 0xA8, 0x05, 0x2E, 0x86, + 0xC1, 0x8C, 0x67, 0x28, 0x63, 0x18, 0xC3, 0x20, 0xC6, 0x2F, 0x32, 0xCF, + 0x0B, 0x5E, 0xDC, 0x46, 0x18, 0xBF, 0x38, 0x06, 0x33, 0x92, 0x71, 0x0C, + 0x67, 0x10, 0x23, 0x15, 0x9F, 0x08, 0xC5, 0x2B, 0x9C, 0x71, 0x8D, 0x61, + 0x94, 0xE6, 0xDC, 0xDD, 0x58, 0xC6, 0x2A, 0xE2, 0xAD, 0x1E, 0xAB, 0xFA, + 0x1B, 0x19, 0xC0, 0xA8, 0x45, 0xE5, 0x5F, 0x01, 0x0B, 0x70, 0x0D, 0x23, + 0x1C, 0xF1, 0xA8, 0x47, 0x40, 0x00, + /* terminating empty sub-block */ 0, + /* trailer */ ';' + }; + unsigned c, i = 0; + unsigned char r, g, b; + /* Global colour table colour cycling; aiming for 0x50, 0xA0, 0xC0. */ + r = 0xF0, g = 0x00, b = 0x32; + if(parm < 40) { + unsigned char change = (unsigned char)((40 - parm) << 1); + r -= change, g += change, b += change; + } + for(c = 0; c < 256; c++) { + if(c >= parm - 40 && c < parm + 40) r -= 2, g += 2, b += 2; + table[i++] = r, table[i++] = g, table[i++] = b; + } + assert(i == sizeof table); + if(fwrite(header, 1, sizeof header, stdout) != sizeof header + || fwrite(table, 1, sizeof table, stdout) != sizeof table + || fwrite(descriptor_data_end, 1, sizeof descriptor_data_end, stdout) + != sizeof descriptor_data_end) perror("stdout"); +} + +int main(void) { + char *env; + if(!(env = getenv("REQUEST_METHOD")) + || (strcmp(env, "get") && strcmp(env, "GET")) + || !(env = getenv("QUERY_STRING"))) { + printf("Status: 400 Missing required argument.\n\n"); + fprintf(stderr, "Usage: gifbar?[0-255]\n"); + return EXIT_FAILURE; + } + printf("Content-type: image/gif\n\n"); + /* May need to set `stdout` to binary mode to avoid line feed translation; + if on Windows? if(setmode(stdout, O_BINARY) == -1) return 1; */ + print_gif((unsigned char)atoi(env)); /* Don't care ab conversion errors. */ + return EXIT_SUCCESS; +}