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mirror of https://github.com/woo-j/zint.git synced 2024-12-23 13:33:55 +03:00
zint/backend/mailmark.c
gitlost eb035a6372 GUI: fix foreground/background picker invocations (broken
[f3a982c1dd])
AZTEC/CODE16K/CODEONE/DATAMATRIX/DBAR_EXP/GRIDMATRIX/HANXIN
/MAILMARK_4S/PDF417/MSI_PLESSEY/QRCODE/RMQR/TIF/ULTRA/USPS_IMAIL:
  lessen storage of some tables by using least integral size
  required (saves ~3K); reformat some tables, comments
AUSPOST/AZTEC: remove unnecessary int casts on array indexing
CODE11/CODE39: move start/stop chars into one entry in tables to
  save a few bytes; some reformatting, comments
CODEONE: add `c1_` prefixes
common: more precise compiler/version checks
composite: add `cc_` prefixes; UINT -> unsigned short; use
  `sizeof()` instead of `strlen()` for `in_linear_comp` static;
  some reformatting, comments
EMF: use table instead of string for `ultra_chars[]`
GIF: remove unnecessary cast
library: use `sizeof()` instead of `strlen()` for static;
  add `consts` to `escape_char_process()` & use unsigned for `ch`
DBAR: use `dbar_`, `dbar_ltd_`, `dbar_exp_` prefixes
docs: update pandoc version
2024-05-27 23:19:45 +01:00

685 lines
22 KiB
C

/* mailmark.c - Royal Mail 4-state and 2D Mailmark barcodes */
/*
libzint - the open source barcode library
Copyright (C) 2008-2024 Robin Stuart <rstuart114@gmail.com>
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
3. Neither the name of the project nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
/* SPDX-License-Identifier: BSD-3-Clause */
/*
* Developed in accordance with "Royal Mail Mailmark barcode C encoding and deconding instructions"
* (https://www.royalmail.com/sites/default/files/
* Mailmark-4-state-barcode-C-encoding-and-decoding-instructions-Sept-2015.pdf)
* and "Royal Mail Mailmark barcode L encoding and decoding"
* (https://www.royalmail.com/sites/default/files/
* Mailmark-4-state-barcode-L-encoding-and-decoding-instructions-Sept-2015.pdf)
*
*/
#include <stdio.h>
#include "common.h"
#include "large.h"
#include "reedsol.h"
#define RUBIDIUM_F (IS_NUM_F | IS_UPR_F | IS_SPC_F) /* RUBIDIUM "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ " */
/* Allowed character values from Table 3 */
#define SET_F "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
#define SET_L "ABDEFGHJLNPQRSTUWXYZ"
#define SET_N "0123456789"
#define SET_S " "
static const char mailmark_postcode_format[6][9] = {
{'F','N','F','N','L','L','N','L','S'}, {'F','F','N','N','L','L','N','L','S'},
{'F','F','N','N','N','L','L','N','L'}, {'F','F','N','F','N','L','L','N','L'},
{'F','N','N','L','L','N','L','S','S'}, {'F','N','N','N','L','L','N','L','S'}
};
/* Data/Check Symbols from Table 5 */
static const unsigned char mailmark_data_symbol_odd[32] = {
0x01, 0x02, 0x04, 0x07, 0x08, 0x0B, 0x0D, 0x0E, 0x10, 0x13, 0x15, 0x16,
0x19, 0x1A, 0x1C, 0x1F, 0x20, 0x23, 0x25, 0x26, 0x29, 0x2A, 0x2C, 0x2F,
0x31, 0x32, 0x34, 0x37, 0x38, 0x3B, 0x3D, 0x3E
};
static const unsigned char mailmark_data_symbol_even[30] = {
0x03, 0x05, 0x06, 0x09, 0x0A, 0x0C, 0x0F, 0x11, 0x12, 0x14, 0x17, 0x18,
0x1B, 0x1D, 0x1E, 0x21, 0x22, 0x24, 0x27, 0x28, 0x2B, 0x2D, 0x2E, 0x30,
0x33, 0x35, 0x36, 0x39, 0x3A, 0x3C
};
static const unsigned char mailmark_extender_group_c[22] = {
3, 5, 7, 11, 13, 14, 16, 17, 19, 0, 1, 2, 4, 6, 8, 9, 10, 12, 15, 18, 20, 21
};
static const unsigned char mailmark_extender_group_l[26] = {
2, 5, 7, 8, 13, 14, 15, 16, 21, 22, 23, 0, 1, 3, 4, 6, 9, 10, 11, 12, 17, 18, 19, 20, 24, 25
};
static int mailmark_verify_character(char input, char type) {
int val = 0;
switch (type) {
case 'F':
val = posn(SET_F, input);
break;
case 'L':
val = posn(SET_L, input);
break;
case 'N':
val = posn(SET_N, input);
break;
case 'S':
val = posn(SET_S, input);
break;
}
if (val == -1) {
return 0;
} else {
return 1;
}
}
static int mailmark_verify_postcode(const char postcode[10], int *p_postcode_type) {
int postcode_type;
/* Detect postcode type */
/* postcode_type is used to select which format of postcode
*
* 1 = FNFNLLNLS
* 2 = FFNNLLNLS
* 3 = FFNNNLLNL
* 4 = FFNFNLLNL
* 5 = FNNLLNLSS
* 6 = FNNNLLNLS
* 7 = International designation
*/
if (strcmp(postcode, "XY11 ") == 0) {
postcode_type = 7;
} else {
if (postcode[7] == ' ') {
postcode_type = 5;
} else {
if (postcode[8] == ' ') {
/* Types 1, 2 and 6 */
if (z_isdigit(postcode[1])) {
if (z_isdigit(postcode[2])) {
postcode_type = 6;
} else {
postcode_type = 1;
}
} else {
postcode_type = 2;
}
} else {
/* Types 3 and 4 */
if (z_isdigit(postcode[3])) {
postcode_type = 3;
} else {
postcode_type = 4;
}
}
}
}
if (p_postcode_type) {
*p_postcode_type = postcode_type;
}
/* Verify postcode type */
if (postcode_type != 7) {
int i;
const char *const pattern = mailmark_postcode_format[postcode_type - 1];
for (i = 0; i < 9; i++) {
if (!(mailmark_verify_character(postcode[i], pattern[i]))) {
return 1;
}
}
}
return 0;
}
INTERNAL int daft_set_height(struct zint_symbol *symbol, const float min_height, const float max_height);
/* Royal Mail 4-state Mailmark */
INTERNAL int mailmark_4s(struct zint_symbol *symbol, unsigned char source[], int length) {
char local_source[28];
int format;
int version_id;
int mail_class;
int supply_chain_id;
unsigned int item_id;
char postcode[10];
int postcode_type;
large_uint destination_postcode;
large_uint b;
large_uint cdv;
unsigned char data[26];
int data_top, data_step;
unsigned char check[7];
unsigned int extender[27];
char bar[80];
char *d = bar;
int check_count;
int i, j, len;
rs_t rs;
int error_number = 0;
if (length > 26) {
strcpy(symbol->errtxt, "580: Input too long (26 character maximum)");
return ZINT_ERROR_TOO_LONG;
}
ustrcpy(local_source, source);
if (length < 22) {
if (length < 14) {
strcpy(symbol->errtxt, "588: Input too short (14 character minimum)");
return ZINT_ERROR_TOO_LONG;
}
for (i = length; i <= 22; i++) {
strcat(local_source, " ");
}
length = 22;
} else if ((length > 22) && (length < 26)) {
for (i = length; i <= 26; i++) {
strcat(local_source, " ");
}
length = 26;
}
to_upper((unsigned char *) local_source, length);
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("Producing 4-state Mailmark (%d): %s<end>\n", length, local_source);
}
if (!is_sane(RUBIDIUM_F, (unsigned char *) local_source, length)) {
strcpy(symbol->errtxt, "581: Invalid character in data (alphanumerics and space only)");
return ZINT_ERROR_INVALID_DATA;
}
/* Format is in the range 0-4 */
format = ctoi(local_source[0]);
if ((format < 0) || (format > 4)) {
strcpy(symbol->errtxt, "582: Format (1st character) out of range (0 to 4)");
return ZINT_ERROR_INVALID_DATA;
}
/* Version ID is in the range 1-4 */
version_id = ctoi(local_source[1]) - 1;
if ((version_id < 0) || (version_id > 3)) {
strcpy(symbol->errtxt, "583: Version ID (2nd character) out of range (1 to 4)");
return ZINT_ERROR_INVALID_DATA;
}
/* Class is in the range 0-9,A-E */
mail_class = ctoi(local_source[2]);
if ((mail_class < 0) || (mail_class > 14)) {
strcpy(symbol->errtxt, "584: Class (3rd character) out of range (0 to 9 and A to E)");
return ZINT_ERROR_INVALID_DATA;
}
/* Supply Chain ID is 2 digits for barcode C and 6 digits for barcode L */
supply_chain_id = 0;
for (i = 3; i < (length - 17); i++) {
if (z_isdigit(local_source[i])) {
supply_chain_id *= 10;
supply_chain_id += ctoi(local_source[i]);
} else {
sprintf(symbol->errtxt, "585: Invalid Supply Chain ID at character %d (digits only)", i);
return ZINT_ERROR_INVALID_DATA;
}
}
/* Item ID is 8 digits */
item_id = 0;
for (i = length - 17; i < (length - 9); i++) {
if (z_isdigit(local_source[i])) {
item_id *= 10;
item_id += ctoi(local_source[i]);
} else {
sprintf(symbol->errtxt, "586: Invalid Item ID at character %d (digits only)", i);
return ZINT_ERROR_INVALID_DATA;
}
}
/* Separate Destination Post Code plus DPS field */
for (i = 0; i < 9; i++) {
postcode[i] = local_source[(length - 9) + i];
}
postcode[9] = '\0';
if (mailmark_verify_postcode(postcode, &postcode_type) != 0) {
sprintf(symbol->errtxt, "587: Invalid postcode \"%s\"", postcode);
return ZINT_ERROR_INVALID_DATA;
}
/* Convert postcode to internal user field */
large_load_u64(&destination_postcode, 0);
if (postcode_type != 7) {
const char *const pattern = mailmark_postcode_format[postcode_type - 1];
large_load_u64(&b, 0);
for (i = 0; i < 9; i++) {
switch (pattern[i]) {
case 'F':
large_mul_u64(&b, 26);
large_add_u64(&b, posn(SET_F, postcode[i]));
break;
case 'L':
large_mul_u64(&b, 20);
large_add_u64(&b, posn(SET_L, postcode[i]));
break;
case 'N':
large_mul_u64(&b, 10);
large_add_u64(&b, posn(SET_N, postcode[i]));
break;
/* case 'S' ignored as value is 0 */
}
}
large_load(&destination_postcode, &b);
/* destination_postcode = a + b */
large_load_u64(&b, 1);
if (postcode_type == 1) {
large_add(&destination_postcode, &b);
}
large_add_u64(&b, 5408000000);
if (postcode_type == 2) {
large_add(&destination_postcode, &b);
}
large_add_u64(&b, 5408000000);
if (postcode_type == 3) {
large_add(&destination_postcode, &b);
}
large_add_u64(&b, 54080000000);
if (postcode_type == 4) {
large_add(&destination_postcode, &b);
}
large_add_u64(&b, 140608000000);
if (postcode_type == 5) {
large_add(&destination_postcode, &b);
}
large_add_u64(&b, 208000000);
if (postcode_type == 6) {
large_add(&destination_postcode, &b);
}
}
/* Conversion from Internal User Fields to Consolidated Data Value */
/* Set CDV to 0 */
large_load_u64(&cdv, 0);
/* Add Destination Post Code plus DPS */
large_add(&cdv, &destination_postcode);
/* Multiply by 100,000,000 */
large_mul_u64(&cdv, 100000000);
/* Add Item ID */
large_add_u64(&cdv, item_id);
if (length == 22) {
/* Barcode C - Multiply by 100 */
large_mul_u64(&cdv, 100);
} else {
/* Barcode L - Multiply by 1,000,000 */
large_mul_u64(&cdv, 1000000);
}
/* Add Supply Chain ID */
large_add_u64(&cdv, supply_chain_id);
/* Multiply by 15 */
large_mul_u64(&cdv, 15);
/* Add Class */
large_add_u64(&cdv, mail_class);
/* Multiply by 5 */
large_mul_u64(&cdv, 5);
/* Add Format */
large_add_u64(&cdv, format);
/* Multiply by 4 */
large_mul_u64(&cdv, 4);
/* Add Version ID */
large_add_u64(&cdv, version_id);
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("DPC type %d\n", postcode_type);
fputs("CDV: ", stdout);
large_print(&cdv);
}
if (length == 22) {
data_top = 15;
data_step = 8;
check_count = 6;
} else {
data_top = 18;
data_step = 10;
check_count = 7;
}
/* Conversion from Consolidated Data Value to Data Numbers */
for (j = data_top; j >= (data_step + 1); j--) {
data[j] = (unsigned char) large_div_u64(&cdv, 32);
}
for (j = data_step; j >= 0; j--) {
data[j] = (unsigned char) large_div_u64(&cdv, 30);
}
/* Generation of Reed-Solomon Check Numbers */
rs_init_gf(&rs, 0x25);
rs_init_code(&rs, check_count, 1);
rs_encode(&rs, (data_top + 1), data, check);
/* Append check digits to data */
for (i = 1; i <= check_count; i++) {
data[data_top + i] = check[check_count - i];
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
fputs("Codewords:", stdout);
for (i = 0; i <= data_top + check_count; i++) {
printf(" %d", (int) data[i]);
}
fputc('\n', stdout);
}
/* Conversion from Data Numbers and Check Numbers to Data Symbols and Check Symbols */
for (i = 0; i <= data_step; i++) {
data[i] = mailmark_data_symbol_even[data[i]];
}
for (i = data_step + 1; i <= (data_top + check_count); i++) {
data[i] = mailmark_data_symbol_odd[data[i]];
}
/* Conversion from Data Symbols and Check Symbols to Extender Groups */
for (i = 0; i < length; i++) {
if (length == 22) {
extender[mailmark_extender_group_c[i]] = data[i];
} else {
extender[mailmark_extender_group_l[i]] = data[i];
}
}
/* Conversion from Extender Groups to Bar Identifiers */
for (i = 0; i < length; i++) {
for (j = 0; j < 3; j++) {
switch (extender[i] & 0x24) {
case 0x24:
*d++ = 'F';
break;
case 0x20:
if (i % 2) {
*d++ = 'D';
} else {
*d++ = 'A';
}
break;
case 0x04:
if (i % 2) {
*d++ = 'A';
} else {
*d++ = 'D';
}
break;
default:
*d++ = 'T';
break;
}
extender[i] = extender[i] << 1;
}
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("Bar pattern: %.*s\n", (int) (d - bar), bar);
}
/* Translate 4-state data pattern to symbol */
j = 0;
for (i = 0, len = d - bar; i < len; i++) {
if ((bar[i] == 'F') || (bar[i] == 'A')) {
set_module(symbol, 0, j);
}
set_module(symbol, 1, j);
if ((bar[i] == 'F') || (bar[i] == 'D')) {
set_module(symbol, 2, j);
}
j += 2;
}
if (symbol->output_options & COMPLIANT_HEIGHT) {
/* Royal Mail Mailmark Barcode Definition Document (15 Sept 2015) Section 3.5.1
(https://www.royalmail.com/sites/default/files/
Royal-Mail-Mailmark-barcode-definition-document-September-2015.pdf)
Using bar pitch as X (25.4mm / 42.3) ~ 0.6mm based on 21.2 bars + 21.1 spaces per 25.4mm (bar width
0.38mm - 0.63mm)
Using recommended 1.9mm and 1.3mm heights for Ascender/Descenders and Trackers resp. as defaults
Min height 4.22mm * 39 (max pitch) / 25.4mm ~ 6.47, max height 5.84mm * 47 (min pitch) / 25.4mm ~ 10.8
*/
const float min_height = 6.47952747f; /* (4.22 * 39) / 25.4 */
const float max_height = 10.8062992f; /* (5.84 * 47) / 25.4 */
symbol->row_height[0] = 3.16417313f; /* (1.9 * 42.3) / 25.4 */
symbol->row_height[1] = 2.16496062f; /* (1.3 * 42.3) / 25.4 */
/* Note using max X for minimum and min X for maximum */
error_number = daft_set_height(symbol, min_height, max_height);
} else {
symbol->row_height[0] = 4.0f;
symbol->row_height[1] = 2.0f;
(void) daft_set_height(symbol, 0.0f, 0.0f);
}
symbol->rows = 3;
symbol->width = j - 1;
return error_number;
}
INTERNAL int datamatrix(struct zint_symbol *symbol, struct zint_seg segs[], const int seg_count);
/* Royal Mail 2D Mailmark (CMDM) (Data Matrix) */
/* https://www.royalmailtechnical.com/rmt_docs/User_Guides_2021/Mailmark_Barcode_definition_document_20210215.pdf */
INTERNAL int mailmark_2d(struct zint_symbol *symbol, unsigned char source[], int length) {
unsigned char local_source[90 + 1];
char postcode[10];
int i;
struct zint_seg segs[1];
if (length > 90) {
strcpy(symbol->errtxt, "589: Input too long (90 character maximum)");
return ZINT_ERROR_TOO_LONG;
}
if (length < 28) { /* After adding prefix (4), blank Return to Sender Post Code (7), Reserved (6): 28 + 17 = 45 */
strcpy(symbol->errtxt, "860: Input too short (28 character minimum)");
return ZINT_ERROR_TOO_LONG;
}
/* Add prefix if missing */
memcpy(local_source, source, 4);
to_upper(local_source, 3);
if (memcmp(local_source, "JGB ", 4) != 0) {
if (length > 86) {
strcpy(symbol->errtxt, "861: Input too long (86 character maximum)");
return ZINT_ERROR_TOO_LONG;
}
ustrcpy(local_source, "JGB ");
ustrcpy(local_source + 4, source);
length += 4;
} else {
ustrcpy(local_source, source);
}
if (length < 32) {
strcpy(symbol->errtxt, "862: Input too short (32 character minimum)");
return ZINT_ERROR_TOO_LONG;
}
if (length < 39) { /* Space-pad Return to Sender Post Code */
memset(local_source + length, ' ', 39 - length);
local_source[39] = '\0';
length = 39;
}
to_upper(local_source, 39);
if (length < 45) { /* Space-pad Reserved */
memset(local_source + length, ' ', 45 - length);
local_source[45] = '\0';
length = 45;
}
/* 8: 24 x 24, 10: 32 x 32, 30: 16 x 48 */
if (symbol->option_2) {
if (symbol->option_2 != 8 && symbol->option_2 != 10 && symbol->option_2 != 30) {
strcpy(symbol->errtxt, "863: Invalid symbol size selected (8, 10, 30 only)");
return ZINT_ERROR_INVALID_OPTION;
}
if (symbol->option_2 == 8) {
if (length > 51) {
strcpy(symbol->errtxt, "864: Input too long for selected size (51 character maximum)");
return ZINT_ERROR_TOO_LONG;
}
} else if (symbol->option_2 == 30) {
if (length > 70) {
strcpy(symbol->errtxt, "865: Input too long for selected size (70 character maximum)");
return ZINT_ERROR_TOO_LONG;
}
}
} else {
if (length <= 51) {
symbol->option_2 = 8;
} else if (length <= 70 && (symbol->option_3 & 0x7F) != DM_SQUARE) {
symbol->option_2 = 30;
} else {
symbol->option_2 = 10;
}
}
if (symbol->debug & ZINT_DEBUG_PRINT) {
printf("Producing 2D Mailmark %d (%d): %s<end>\n", symbol->option_2, length, local_source);
}
if (!is_sane(RUBIDIUM_F, local_source, 45)) {
strcpy(symbol->errtxt,
"866: Invalid character in data (alphanumerics and space only in first 45 characters)");
return ZINT_ERROR_INVALID_DATA;
}
/* Information Type ID */
/* Not checking that matches values listed in Mailmark Definition Document as contradicted by Mailmark Mailing
Requirements Section 5.7 which says 'P' for poll card is valid, which isn't listed */
if (local_source[4] == ' ') {
strcpy(symbol->errtxt, "867: Invalid Information Type ID (cannot be space)");
return ZINT_ERROR_INVALID_DATA;
}
/* Version ID */
if (local_source[5] != '1') {
strcpy(symbol->errtxt, "868: Invalid Version ID (\"1\" only)");
return ZINT_ERROR_INVALID_DATA;
}
/* Class */
if (local_source[6] == ' ') {
strcpy(symbol->errtxt, "869: Invalid Class (cannot be space)");
return ZINT_ERROR_INVALID_DATA;
}
/* Supply Chain ID */
if (cnt_digits(local_source, length, 7, 7) != 7) {
strcpy(symbol->errtxt, "870: Invalid Supply Chain ID (7 digits only)");
return ZINT_ERROR_INVALID_DATA;
}
/* Item ID */
if (cnt_digits(local_source, length, 14, 8) != 8) {
strcpy(symbol->errtxt, "871: Invalid Item ID (8 digits only)");
return ZINT_ERROR_INVALID_DATA;
}
/* Destination Post Code plus DPS field */
for (i = 0; i < 9; i++) {
postcode[i] = local_source[22 + i];
}
postcode[9] = '\0';
if (mailmark_verify_postcode(postcode, NULL) != 0) {
strcpy(symbol->errtxt, "872: Invalid Destination Post Code plus DPS");
return ZINT_ERROR_INVALID_DATA;
}
/* Service Type */
if (local_source[31] < '0' || local_source[31] > '6') {
strcpy(symbol->errtxt, "873: Invalid Service Type (\"0\" to \"6\" only)");
return ZINT_ERROR_INVALID_DATA;
}
/* Return to Sender Post Code */
if (memcmp(local_source + 32, " ", 7) != 0) { /* If not blank (allowed) */
for (i = 0; i < 7; i++) {
postcode[i] = local_source[32 + i];
}
/* Add dummy DPS */
for (i = 6; postcode[i] == ' '; i--); /* Skip any terminal spaces */
i++;
postcode[i++] = '1';
postcode[i++] = 'A';
while (i != 9) {
postcode[i++] = ' ';
}
postcode[9] = '\0';
if (mailmark_verify_postcode(postcode, NULL) != 0) {
strcpy(symbol->errtxt, "874: Invalid Return to Sender Post Code");
return ZINT_ERROR_INVALID_DATA;
}
}
/* Reserved */
if (memcmp(local_source + 39, " ", 6) != 0) {
strcpy(symbol->errtxt, "875: Invalid Reserved field (must be spaces only)");
return ZINT_ERROR_INVALID_DATA;
}
segs[0].eci = 0;
segs[0].source = local_source;
segs[0].length = length;
return datamatrix(symbol, segs, 1);
}
/* vim: set ts=4 sw=4 et : */