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https://git.code.sf.net/p/zint/code
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Add Channel Code
This commit is contained in:
hooper114
parent
cd614f42f7
commit
0e560805b4
8 changed files with 232 additions and 17 deletions
144
backend/code.c
144
backend/code.c
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@ -73,6 +73,16 @@ static char *C93Table[47] = {"131112", "111213", "111312", "111411", "121113", "
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"122121", "123111", "121131", "311112", "311211", "321111", "112131", "113121", "211131",
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"121221", "312111", "311121", "122211"};
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/* Global Variables for Channel Code */
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int S[11], B[11];
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long value;
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long target_value;
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char pattern[30];
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/* Function Prototypes */
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void NextS(int Chan, int i, int MaxS, int MaxB);
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void NextB(int Chan, int i, int MaxB, int MaxS);
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/* *********************** CODE 11 ******************** */
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int code_11(struct zint_symbol *symbol, unsigned char source[])
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@ -88,12 +98,12 @@ int code_11(struct zint_symbol *symbol, unsigned char source[])
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strcpy(dest, "");
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if(ustrlen(source) > 80) {
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strcpy(symbol->errtxt, "Input too long [011]");
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strcpy(symbol->errtxt, "Input too long");
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return ERROR_TOO_LONG;
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}
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error_number = is_sane(NASET, source);
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if(error_number == ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "Invalid characters in data [012]");
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strcpy(symbol->errtxt, "Invalid characters in data");
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return error_number;
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}
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c_weight = 1;
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@ -170,12 +180,12 @@ int c39(struct zint_symbol *symbol, unsigned char source[])
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to_upper(source);
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if(ustrlen(source) > 45) {
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strcpy(symbol->errtxt, "Input too long [081]");
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strcpy(symbol->errtxt, "Input too long");
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return ERROR_TOO_LONG;
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}
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error_number = is_sane(TCSET , source);
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if(error_number == ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "Invalid characters in data [082]");
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strcpy(symbol->errtxt, "Invalid characters in data");
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return error_number;
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}
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@ -257,12 +267,12 @@ int pharmazentral(struct zint_symbol *symbol, unsigned char source[])
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count = 0;
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h = ustrlen(source);
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if(h > 6) {
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strcpy(symbol->errtxt, "Input wrong length [521]");
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strcpy(symbol->errtxt, "Input wrong length");
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return ERROR_TOO_LONG;
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}
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error_number = is_sane(NESET, source);
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if(error_number == ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "Invalid characters in data [522]");
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strcpy(symbol->errtxt, "Invalid characters in data");
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return error_number;
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}
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@ -310,7 +320,7 @@ int ec39(struct zint_symbol *symbol, unsigned char source[])
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/* only stops strings which are far too long - actual length of the barcode
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depends on the type of data being encoded - if it's too long it's picked up
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by c39() */
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strcpy(symbol->errtxt, "Input too long [091]");
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strcpy(symbol->errtxt, "Input too long");
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return ERROR_TOO_LONG;
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}
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@ -318,7 +328,7 @@ int ec39(struct zint_symbol *symbol, unsigned char source[])
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for(i = 0; i < ustrlen(source); i++) {
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if(source[i] > 127) {
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/* Cannot encode extended ASCII */
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strcpy(symbol->errtxt, "Invalid characters in input data [092]");
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strcpy(symbol->errtxt, "Invalid characters in input data");
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return ERROR_INVALID_DATA;
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}
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}
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@ -368,14 +378,14 @@ int c93(struct zint_symbol *symbol, unsigned char source[])
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if(ustrlen(source) > 45) {
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/* This stops rediculously long input - the actual length of the barcode
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depends on the type of data */
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strcpy(symbol->errtxt, "Input too long [251]");
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strcpy(symbol->errtxt, "Input too long");
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return ERROR_TOO_LONG;
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}
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for(i = 0; i < ustrlen(source); i++) {
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if(source[i] > 127) {
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/* Cannot encode extended ASCII */
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strcpy(symbol->errtxt, "Invalid characters in input data [252]");
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strcpy(symbol->errtxt, "Invalid characters in input data");
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return ERROR_INVALID_DATA;
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}
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}
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@ -395,7 +405,7 @@ int c93(struct zint_symbol *symbol, unsigned char source[])
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/* Now we can check the true length of the barcode */
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if(strlen(buffer) > 45) {
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strcpy(symbol->errtxt, "Input too long [253]");
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strcpy(symbol->errtxt, "Input too long");
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return ERROR_TOO_LONG;
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}
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@ -466,3 +476,115 @@ int c93(struct zint_symbol *symbol, unsigned char source[])
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}
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return error_number;
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}
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/* NextS() and NextB() are from ANSI/AIM BC12-1998 and are Copyright (c) AIM 1997 */
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/* Their are used here on the understanding that they form part of the specification
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for Channel Code and therefore their use is permitted under the following terms
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set out in that document:
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"It is the intent and understanding of AIM [t]hat the symbology presented in this
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specification is entirely in the public domain and free of all use restrictions,
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licenses and fees. AIM USA, its memer companies, or individual officers
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assume no liability for the use of this document." */
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void CheckCharacter() {
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int i;
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char part[3];
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if(value == target_value) {
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/* Target reached - save the generated pattern */
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strcpy(pattern, "11110");
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for(i = 0; i < 11; i++) {
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part[0] = itoc(S[i]);
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part[1] = itoc(B[i]);
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part[2] = '\0';
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concat(pattern, part);
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}
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}
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}
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void NextB(int Chan, int i, int MaxB, int MaxS) {
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int b;
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b = (S[i]+B[i-1]+S[i-1]+B[i-2] > 4)? 1:2;
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if (i < Chan+2) {
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for (; b <= MaxB; b++) {
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B[i] = b;
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NextS(Chan,i+1,MaxS,MaxB+1-b);
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}
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} else if (b <= MaxB) {
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B[i] = MaxB;
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CheckCharacter();
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value++;
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}
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}
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void NextS(int Chan, int i, int MaxS, int MaxB) {
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int s;
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for (s = (i<Chan+2)? 1: MaxS; s <= MaxS; s++) {
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S[i] = s;
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NextB(Chan,i,MaxB,MaxS+1-s);
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}
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}
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int channel_code(struct zint_symbol *symbol, unsigned char source[]) {
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/* Channel Code - According to ANSI/AIM BC12-1998 */
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int input_length, channels, i;
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int error_number = 0, range = 0, zeroes;
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char hrt[9];
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input_length = ustrlen(source);
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target_value = 0;
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if(input_length > 7) {
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strcpy(symbol->errtxt, "Input too long");
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return ERROR_TOO_LONG;
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}
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error_number = is_sane(NESET, source);
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if(error_number == ERROR_INVALID_DATA) {
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strcpy(symbol->errtxt, "Invalid characters in data");
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return error_number;
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}
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if((symbol->option_2 < 3) || (symbol->option_2 > 8)) { channels = 0; } else { channels = symbol->option_2; }
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if(channels == 0) { channels = input_length + 1; }
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if(channels == 2) { channels = 3; }
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for(i = 0; i < input_length; i++) {
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target_value *= 10;
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target_value += ctoi((char) source[i]);
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}
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switch(channels) {
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case 3: if(target_value > 26) { range = 1; } break;
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case 4: if(target_value > 292) { range = 1; } break;
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case 5: if(target_value > 3493) { range = 1; } break;
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case 6: if(target_value > 44072) { range = 1; } break;
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case 7: if(target_value > 576688) { range = 1; } break;
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case 8: if(target_value > 7742862) { range = 1; } break;
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}
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if(range) {
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strcpy(symbol->errtxt, "Value out of range");
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return ERROR_INVALID_DATA;
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}
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for(i = 0; i < 11; i++) { B[i] = 0; S[i] = 0; }
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B[0] = S[1] = B[1] = S[2] = B[2] = 1;
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value = 0;
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NextS(channels,3,channels,channels);
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strcpy(hrt, "");
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zeroes = channels - 1 - input_length;
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for(i = 0; i < zeroes; i++) {
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concat(hrt, "0");
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}
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concat(hrt, (char *)source);
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ustrcpy(symbol->text, (unsigned char *)hrt);
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expand(symbol, pattern);
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return error_number;
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}
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