+++ /dev/null
-/*
- * library.c -- external functions of libbarcode
- *
- * Copyright (c) 1999 Alessandro Rubini (rubini@gnu.org)
- * Copyright (c) 1999 Prosa Srl. (prosa@prosa.it)
- *
- * 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <ctype.h>
-#ifdef HAVE_UNISTD_H /* sometimes (windows, for instance) it's missing */
-# include <unistd.h>
-#endif
-#include <errno.h>
-
-#include "barcode.h"
-
-/*
- * This function allocates a barcode structure and strdup()s the
- * text string. It returns NULL in case of error
- */
-struct Barcode_Item *Barcode_Create(char *text)
-{
- struct Barcode_Item *bc;
-
- bc = malloc(sizeof(*bc));
- if (!bc) return NULL;
-
- memset(bc, 0, sizeof(*bc));
- bc->ascii = strdup(text);
- bc->margin = BARCODE_DEFAULT_MARGIN; /* default margin */
- return bc;
-}
-
-
-/*
- * Free a barcode structure
- */
-int Barcode_Delete(struct Barcode_Item *bc)
-{
- if (bc->ascii)
- free(bc->ascii);
- if (bc->partial)
- free(bc->partial);
- if (bc->textinfo)
- free(bc->textinfo);
- if (bc->encoding)
- free(bc->encoding);
- free(bc);
- return 0; /* always success */
-}
-
-
-/*
- * The various supported encodings. This might be extended to support
- * dynamic addition of extra encodings
- */
-extern int Barcode_ean_verify(unsigned char *text);
-extern int Barcode_ean_encode(struct Barcode_Item *bc);
-extern int Barcode_upc_verify(unsigned char *text);
-extern int Barcode_upc_encode(struct Barcode_Item *bc);
-extern int Barcode_isbn_verify(unsigned char *text);
-extern int Barcode_isbn_encode(struct Barcode_Item *bc);
-extern int Barcode_39_verify(unsigned char *text);
-extern int Barcode_39_encode(struct Barcode_Item *bc);
-extern int Barcode_128b_verify(unsigned char *text);
-extern int Barcode_128b_encode(struct Barcode_Item *bc);
-extern int Barcode_128c_verify(unsigned char *text);
-extern int Barcode_128c_encode(struct Barcode_Item *bc);
-extern int Barcode_128_verify(unsigned char *text);
-extern int Barcode_128_encode(struct Barcode_Item *bc);
-extern int Barcode_128raw_verify(unsigned char *text);
-extern int Barcode_128raw_encode(struct Barcode_Item *bc);
-extern int Barcode_i25_verify(unsigned char *text);
-extern int Barcode_i25_encode(struct Barcode_Item *bc);
-extern int Barcode_cbr_verify(unsigned char *text);
-extern int Barcode_cbr_encode(struct Barcode_Item *bc);
-extern int Barcode_msi_verify(unsigned char *text);
-extern int Barcode_msi_encode(struct Barcode_Item *bc);
-extern int Barcode_pls_verify(unsigned char *text);
-extern int Barcode_pls_encode(struct Barcode_Item *bc);
-extern int Barcode_93_verify(unsigned char *text);
-extern int Barcode_93_encode(struct Barcode_Item *bc);
-
-
-struct encoding {
- int type;
- int (*verify)(unsigned char *text);
- int (*encode)(struct Barcode_Item *bc);
-};
-
-struct encoding encodings[] = {
- {BARCODE_EAN, Barcode_ean_verify, Barcode_ean_encode},
- {BARCODE_UPC, Barcode_upc_verify, Barcode_upc_encode},
- {BARCODE_ISBN, Barcode_isbn_verify, Barcode_isbn_encode},
- {BARCODE_128B, Barcode_128b_verify, Barcode_128b_encode},
- {BARCODE_128C, Barcode_128c_verify, Barcode_128c_encode},
- {BARCODE_128RAW, Barcode_128raw_verify, Barcode_128raw_encode},
- {BARCODE_39, Barcode_39_verify, Barcode_39_encode},
- {BARCODE_I25, Barcode_i25_verify, Barcode_i25_encode},
- {BARCODE_128, Barcode_128_verify, Barcode_128_encode},
- {BARCODE_CBR, Barcode_cbr_verify, Barcode_cbr_encode},
- {BARCODE_PLS, Barcode_pls_verify, Barcode_pls_encode},
- {BARCODE_MSI, Barcode_msi_verify, Barcode_msi_encode},
- {BARCODE_93, Barcode_93_verify, Barcode_93_encode},
- {0, NULL, NULL}
-};
-
-/*
- * A function to encode a string into bc->partial, ready for
- * postprocessing to the output file. Meaningful bits for "flags" are
- * the encoding mask and the no-checksum flag. These bits
- * get saved in the data structure.
- */
-int Barcode_Encode(struct Barcode_Item *bc, int flags)
-{
- int validbits = BARCODE_ENCODING_MASK | BARCODE_NO_CHECKSUM;
- struct encoding *cptr;
-
- /* If any flag is cleared in "flags", inherit it from "bc->flags" */
- if (!(flags & BARCODE_ENCODING_MASK))
- flags |= bc->flags & BARCODE_ENCODING_MASK;
- if (!(flags & BARCODE_NO_CHECKSUM))
- flags |= bc->flags & BARCODE_NO_CHECKSUM;
- flags = bc->flags = (flags & validbits) | (bc->flags & ~validbits);
-
- if (!(flags & BARCODE_ENCODING_MASK)) {
- /* get the first code able to handle the text */
- for (cptr = encodings; cptr->verify; cptr++)
- if (cptr->verify((unsigned char *)bc->ascii)==0)
- break;
- if (!cptr->verify) {
- bc->error = EINVAL; /* no code can handle this text */
- return -1;
- }
- flags |= cptr->type; /* this works */
- bc->flags |= cptr->type;
- }
- for (cptr = encodings; cptr->verify; cptr++)
- if (cptr->type == (flags & BARCODE_ENCODING_MASK))
- break;
- if (!cptr->verify) {
- bc->error = EINVAL; /* invalid barcode type */
- return -1;
- }
- if (cptr->verify(bc->ascii) != 0) {
- bc->error = EINVAL;
- return -1;
- }
- return cptr->encode(bc);
-}
-
-
-/*
- * When multiple output formats are supported, there will
- * be a jumpt table like the one for the types. Now we don't need it
- */
-extern int Barcode_ps_print(struct Barcode_Item *bc, FILE *f);
-extern int Barcode_pcl_print(struct Barcode_Item *bc, FILE *f);
-
-/*
- * A function to print a partially decoded string. Meaningful bits for
- * "flags" are the output mask etc. These bits get saved in the data
- * structure.
- */
-int Barcode_Print(struct Barcode_Item *bc, FILE *f, int flags)
-{
- int validbits = BARCODE_OUTPUT_MASK | BARCODE_NO_ASCII
- | BARCODE_OUT_NOHEADERS;
-
- /* If any flag is clear in "flags", inherit it from "bc->flags" */
- if (!(flags & BARCODE_OUTPUT_MASK))
- flags |= bc->flags & BARCODE_OUTPUT_MASK;
- if (!(flags & BARCODE_NO_ASCII))
- flags |= bc->flags & BARCODE_NO_ASCII;
- if (!(flags & BARCODE_OUT_NOHEADERS))
- flags |= bc->flags & BARCODE_OUT_NOHEADERS;
- flags = bc->flags = (flags & validbits) | (bc->flags & ~validbits);
-
- if (bc->flags & BARCODE_OUT_PCL)
- return Barcode_pcl_print(bc, f);
- return Barcode_ps_print(bc, f);
-}
-
-/*
- * Choose the position
- */
-int Barcode_Position(struct Barcode_Item *bc, int wid, int hei,
- int xoff, int yoff, double scalef)
-{
- bc->width = wid; bc->height = hei;
- bc->xoff = xoff; bc->yoff = yoff;
- bc->scalef = scalef;
- return 0;
-}
-
-/*
- * Do it all in one step
- */
-int Barcode_Encode_and_Print(char *text, FILE *f, int wid, int hei,
- int xoff, int yoff, int flags)
-{
- struct Barcode_Item * bc;
-
- if (!(bc=Barcode_Create(text))) {
- errno = -ENOMEM;
- return -1;
- }
- if ( Barcode_Position(bc, wid, hei, xoff, yoff, 0.0) < 0
- || Barcode_Encode(bc, flags) < 0
- || Barcode_Print(bc, f, flags) < 0) {
- errno = bc->error;
- Barcode_Delete(bc);
- return -1;
- }
- Barcode_Delete(bc);
- return 0;
-}
-
-/*
- * Return the version
- */
-
-int Barcode_Version(char *vptr)
-{
- if (vptr)
- strcpy(vptr, BARCODE_VERSION);
- return BARCODE_VERSION_INT;
-}
projects / glabels / blobdiff