zint-barcode-generator/frontend/main.c

/* main.c - Command line handling routines for Zint */

/*
    libzint - the open source barcode library
    Copyright (C) 2008 Robin Stuart <robin@zint.org.uk>

    This program 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 this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifndef _MSC_VER
#include <getopt.h>
#include <zint.h>
#else
#include "getopt.h"
#include "zint.h"
#endif
#define NESET "0123456789"

void types(void) {
	printf( 	" 1: Code 11           51: Pharma One-Track         89: ITF-14\n"
			" 2: Standard 2of5     52: PZN                      90: KIX Code\n"
			" 3: Interleaved 2of5  53: Pharma Two-Track         92: Aztec Code\n"
			" 4: IATA 2of5         55: PDF417                   93: DAFT Code\n"
			" 6: Data Logic        56: PDF417 Trunc             97: Micro QR Code\n"
			" 7: Industrial 2of5   57: Maxicode                 98: HIBC Code 128\n"
			" 8: Code 39           58: QR Code                  99: HIBC Code 39\n"
			" 9: Extended Code 39  60: Code 128-B              102: HIBC Data Matrix\n"
			"13: EAN               63: AP Standard Customer    104: HIBC QR Code\n"
			"16: GS1-128           66: AP Reply Paid           106: HIBC PDF417\n"
			"18: Codabar           67: AP Routing              108: HIBC MicroPDF417\n"
			"20: Code 128          68: AP Redirection          110: HIBC Codablock-F\n"
			"21: Leitcode          69: ISBN                    112: HIBC Aztec Code\n"
			"22: Identcode         70: RM4SCC                  128: Aztec Runes\n"
			"23: Code 16k          71: Data Matrix             129: Code 23\n"
			"24: Code 49           72: EAN-14                  130: Comp EAN\n"
			"25: Code 93           74: Codablock-F             131: Comp GS1-128\n"
			"28: Flattermarken     75: NVE-18                  132: Comp Databar-14\n"
			"29: Databar-14        76: Japanese Post           133: Comp Databar Ltd\n"
			"30: Databar Limited   77: Korea Post              134: Comp Databar Ext\n"
			"31: Databar Extended  79: Databar-14 Stack        135: Comp UPC-A\n"
			"32: Telepen Alpha     80: Databar-14 Stack Omni   136: Comp UPC-E\n"
			"34: UPC-A             81: Databar Extended Stack  137: Comp Databar-14 Stack\n"
			"37: UPC-E             82: Planet                  138: Comp Databar Stack Omni\n"
			"40: Postnet           84: MicroPDF                139: Comp Databar Ext Stack\n"
			"47: MSI Plessey       85: USPS OneCode            140: Channel Code\n"
			"49: FIM               86: UK Plessey              141: Code One\n"
			"50: Logmars           87: Telepen Numeric         142: Grid Matrix\n"
	);
}

void usage(void)
{
	printf(
		"Zint version %s\n"
		"Encode input data in a barcode and save as a PNG, EPS or SVG file.\n\n"
		"  -h, --help            Display this message.\n"
		"  -t, --types           Display table of barcode types\n"
		"  -i, --input=FILE      Read data from FILE.\n"
		"  -o, --output=FILE     Write image to FILE. (default is out.png)\n"
		"  -d, --data=DATA       Barcode content.\n"
		"  -b, --barcode=NUMBER  Number of barcode type (default is 20 (=Code128)).\n"
		"  --height=NUMBER       Height of symbol in multiples of x-dimension.\n"
		"  -w, --whitesp=NUMBER  Width of whitespace in multiples of x-dimension.\n"
		"  --border=NUMBER       Width of border in multiples of x-dimension.\n"
		"  --box                 Add a box.\n"
		"  --bind                Add boundary bars.\n"
		"  -r, --reverse         Reverse colours (white on black).\n"
		"  --fg=COLOUR           Specify a foreground colour.\n"
		"  --bg=COLOUR           Specify a background colour.\n"
		"  --scale=NUMBER        Adjust size of output image.\n"
		"  --directpng           Send PNG output to stdout\n"
		"  --directeps           Send EPS output to stdout\n"
		"  --directsvg           Send SVG output to stdout\n"
		"  --rotate=NUMBER       Rotate symbol (PNG output only).\n"
		"  --cols=NUMBER         (PDF417) Number of columns.\n"
		"  --vers=NUMBER         (QR Code) Version\n"
		"  --secure=NUMBER       (PDF417 and QR Code) Error correction level.\n"
		"  --primary=STRING      (Maxicode and Composite) Structured primary message.\n"
		"  --mode=NUMBER         (Maxicode and Composite) Set encoding mode.\n"
		"  --gs1                 Treat input as GS1 data\n"
		"  --binary              Treat input as Binary data\n"
	, ZINT_VERSION);
}

int validator(char test_string[], char source[])
{ /* Verifies that a string only uses valid characters */
	unsigned int i, j, latch;

	for(i = 0; i < strlen(source); i++) {
		latch = 0;
		for(j = 0; j < strlen(test_string); j++) {
			if (source[i] == test_string[j]) { latch = 1; } }
			if (!(latch)) { 
				return ERROR_INVALID_DATA; }
	}
	
	return 0;
}

int main(int argc, char **argv)
{
	struct zint_symbol *my_symbol;
	int c;
	int error_number;
	int rotate_angle;
	int generated;
	
	error_number = 0;
	rotate_angle = 0;
	generated = 0;
	my_symbol = ZBarcode_Create();
	my_symbol->input_mode = UNICODE_MODE;

	if(argc == 1) {
		usage();
		exit(1);
	}

	while(1) {
		int option_index = 0;
		static struct option long_options[] = {
			{"help", 0, 0, 'h'},
			{"types", 0, 0, 't'},
			{"bind", 0, 0, 0},
			{"box", 0, 0, 0},
			{"directeps", 0, 0, 0},
			{"directpng", 0, 0, 0},
			{"directsvg", 0, 0, 0},
			{"barcode", 1, 0, 'b'},
			{"height", 1, 0, 0},
			{"whitesp", 1, 0, 'w'},
			{"border", 1, 0, 0},
			{"data", 1, 0, 'd'},
			{"output", 1, 0, 'o'},
			{"input", 1, 0, 'i'},
			{"fg", 1, 0, 0},
			{"bg", 1, 0, 0},
			{"cols", 1, 0, 0},
			{"vers", 1, 0, 0},
			{"rotate", 1, 0, 0},
			{"secure", 1, 0, 0},
			{"reverse", 1, 0, 'r'},
			{"mode", 1, 0, 0},
			{"primary", 1, 0, 0},
			{"scale", 1, 0, 0},
			{"gs1", 0, 0, 0},
			{"kanji", 0, 0, 0},
			{"sjis", 0, 0, 0},
			{"binary", 0, 0, 0},
			{0, 0, 0, 0}
		};
		c = getopt_long(argc, argv, "htb:w:d:o:i:rcmp", long_options, &option_index);
		if(c == -1) break; 
		
		switch(c) {
			case 0: 
				if(!strcmp(long_options[option_index].name, "bind")) {
					my_symbol->output_options += BARCODE_BIND;
				}
				if(!strcmp(long_options[option_index].name, "box")) {
					my_symbol->output_options += BARCODE_BOX;
				}
				if(!strcmp(long_options[option_index].name, "directeps")) {
					my_symbol->output_options += BARCODE_STDOUT;
					strncpy(my_symbol->outfile, "dummy.eps", 10);
				}
				if(!strcmp(long_options[option_index].name, "directpng")) {
					my_symbol->output_options += BARCODE_STDOUT;
					strncpy(my_symbol->outfile, "dummy.png", 10);
				}
				if(!strcmp(long_options[option_index].name, "directsvg")) {
					my_symbol->output_options += BARCODE_STDOUT;
					strncpy(my_symbol->outfile, "dummy.svg", 10);
				}
				if(!strcmp(long_options[option_index].name, "gs1")) {
					my_symbol->input_mode = GS1_MODE;
				}
				if(!strcmp(long_options[option_index].name, "kanji")) {
					my_symbol->input_mode = KANJI_MODE;
				}
				if(!strcmp(long_options[option_index].name, "sjis")) {
					my_symbol->input_mode = SJIS_MODE;
				}
				if(!strcmp(long_options[option_index].name, "binary")) {
					my_symbol->input_mode = DATA_MODE;
				}
				if(!strcmp(long_options[option_index].name, "fg")) {
					strncpy(my_symbol->fgcolour, optarg, 7);
				}
				if(!strcmp(long_options[option_index].name, "bg")) {
					strncpy(my_symbol->bgcolour, optarg, 7);
				}
				if(!strcmp(long_options[option_index].name, "scale")) {
					my_symbol->scale = (float)(atof(optarg));
					if(my_symbol->scale < 0.01) {
						/* Zero and negative values are not permitted */
						fprintf(stderr, "Invalid scale value\n");
						my_symbol->scale = 1.0;
					}
				}
				if(!strcmp(long_options[option_index].name, "border")) {
					error_number = validator(NESET, optarg);
					if(error_number == ERROR_INVALID_DATA) {
						fprintf(stderr, "Invalid border width\n");
						exit(1);
					}
					if((atoi(optarg) >= 0) && (atoi(optarg) <= 1000)) {
						my_symbol->border_width = atoi(optarg);
					} else {
						fprintf(stderr, "Border width out of range\n");
					}
				}
				if(!strcmp(long_options[option_index].name, "height")) {
					error_number = validator(NESET, optarg);
					if(error_number == ERROR_INVALID_DATA) {
						fprintf(stderr, "Invalid symbol height\n");
						exit(1);
					}
					if((atoi(optarg) >= 1) && (atoi(optarg) <= 1000)) {
						my_symbol->height = atoi(optarg);
					} else {
						fprintf(stderr, "Symbol height out of range\n");
					}
				}

				if(!strcmp(long_options[option_index].name, "cols")) {
					if((atoi(optarg) >= 1) && (atoi(optarg) <= 30)) {
						my_symbol->option_2 = atoi(optarg);
					} else {
						fprintf(stderr, "Number of columns out of range\n");
					}
				}
				if(!strcmp(long_options[option_index].name, "vers")) {
					if((atoi(optarg) >= 1) && (atoi(optarg) <= 40)) {
						my_symbol->option_2 = atoi(optarg);
					} else {
						fprintf(stderr, "Invalid QR Code version\n");
					}
				}
				if(!strcmp(long_options[option_index].name, "secure")) {
					if((atoi(optarg) >= 1) && (atoi(optarg) <= 8)) {
						my_symbol->option_1 = atoi(optarg);
					} else {
						fprintf(stderr, "ECC level out of range\n");
					}
				}
				if(!strcmp(long_options[option_index].name, "primary")) {
					if(strlen(optarg) <= 90) {
						strcpy(my_symbol->primary, optarg);
					} else {
						fprintf(stderr, "Primary data string too long");
					}
				}
				if(!strcmp(long_options[option_index].name, "mode")) {
					/* Don't allow specification of modes 2 and 3 - do it
					automagically instead */
					if((optarg[0] >= '0') && (optarg[0] <= '6')) {
						my_symbol->option_1 = optarg[0] - '0';
					} else {
						fprintf(stderr, "Invalid mode\n");
					}
				}
				if(!strcmp(long_options[option_index].name, "rotate")) {
					/* Only certain inputs allowed */
					error_number = validator(NESET, optarg);
					if(error_number == ERROR_INVALID_DATA) {
						fprintf(stderr, "Invalid rotation parameter\n");
						exit(1);
					}
					switch(atoi(optarg)) {
						case 90: rotate_angle = 90; break;
						case 180: rotate_angle = 180; break;
						case 270: rotate_angle = 270; break;
						default: rotate_angle = 0; break;
					}
				}
				break;
				
			case 'h':
				usage();
				break;
				
			case 't':
				types();
				break;
				
			case 'b':
				error_number = validator(NESET, optarg);
				if(error_number == ERROR_INVALID_DATA) {
					fprintf(stderr, "Invalid barcode type\n");
					exit(1);
				}
				my_symbol->symbology = atoi(optarg);
				break;
				
			case 'w':
				error_number = validator(NESET, optarg);
				if(error_number == ERROR_INVALID_DATA) {
					fprintf(stderr, "Invalid whitespace value\n");
					exit(1);
				}
				if((atoi(optarg) >= 0) && (atoi(optarg) <= 1000)) {
					my_symbol->whitespace_width = atoi(optarg);
				} else {
					fprintf(stderr, "Whitespace value out of range");
				}
				break;
				
			case 'd': /* we have some data! */
				error_number = ZBarcode_Encode_and_Print(my_symbol, (unsigned char*)optarg, strlen(optarg), rotate_angle);
				generated = 1;
				if(error_number != 0) {
					fprintf(stderr, "%s\n", my_symbol->errtxt);
					ZBarcode_Delete(my_symbol);
					return 1;
				}
				break;
				
			case 'i': /* Take data from file */
				error_number = ZBarcode_Encode_File_and_Print(my_symbol, optarg, rotate_angle);
				generated = 1;
				if(error_number != 0) {
					fprintf(stderr, "%s\n", my_symbol->errtxt);
					ZBarcode_Delete(my_symbol);
					return 1;
				}
				break;

			case 'o':
				strncpy(my_symbol->outfile, optarg, 250);
				break;
				
			case 'r':
				strcpy(my_symbol->fgcolour, "ffffff");
				strcpy(my_symbol->bgcolour, "000000");
				break;
				
			case '?':
				break;
				
			default:
				fprintf(stderr, "?? getopt error 0%o\n", c);
		} 
	}
	
		if (optind < argc) {
		fprintf(stderr, "Invalid option ");
		while (optind < argc)
			fprintf(stderr, "%s", argv[optind++]);
		fprintf(stderr, "\n");
	}
	
	if(generated == 0) {
		fprintf(stderr, "error: No data received, no symbol generated\n");
	}
	
	ZBarcode_Delete(my_symbol); 
	
	return error_number;
}