/* postal.c - Handles POSTNET, PLANET, CEPNet, FIM. RM4SCC and Flattermarken */
/*
    libzint - the open source barcode library
    Copyright (C) 2008-2026 Robin Stuart <rstuart114@gmail.com>
    Including bug fixes by Bryan Hatton

    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 */

#include <stdio.h>
#include "common.h"

static const char DAFTSET[] = "FADT";
static const char KRSET[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
static const char KASUTSET[] = "1234567890-abcdefgh";
static const char CHKASUTSET[] = "0123456789-abcdefgh";
#define SHKASUTSET_F (IS_NUM_F | IS_MNS_F | IS_UPR_F) /* SHKASUTSET "1234567890-ABCDEFGHIJKLMNOPQRSTUVWXYZ" */

/* Set height for POSTNET/PLANET/CEPNet codes, maintaining ratio */
static int usps_set_height(struct zint_symbol *symbol, const int no_errtxt) {
    /* USPS Domestic Mail Manual (USPS DMM 300) Jan 8, 2006 (updated 2011) 708.4.2.5 POSTNET Barcode Dimensions and
       Spacing
       http://web.archive.org/web/20061113174253/http://pe.usps.com/cpim/ftp/manuals/dmm300/full/mailingStandards.pdf
       Using bar pitch as X (1" / 43) ~ 0.023" based on 22 bars + 21 spaces per inch (bar width 0.015" - 0.025")
       Half bar height 0.05" +- 0.01;  0.040" (min) / 0.025" (X max) = 1.6 min, 0.060" (max) / 0.015" (X min) = 4 max
       Full bar height 0.125" +- 0.01; 0.115" (min) / 0.025" (X max) = 4.6 min, 0.135" (max) / 0.015" (X min) = 9 max
     */
     /* CEPNet e Código Bidimensional Datamatrix 2D (26/05/2021) 3.3.2 Arquitetura das barras - same as POSTNET */
    int error_number = 0;

    /* No legacy for CEPNet as new */
    if ((symbol->output_options & COMPLIANT_HEIGHT) || symbol->symbology == BARCODE_CEPNET) {
        symbol->row_height[0] = 3.2249999f; /* 0.075 * 43 */
        symbol->row_height[1] = 2.1500001f; /* 0.05 * 43 */
    } else {
        symbol->row_height[0] = 6.0f;
        symbol->row_height[1] = 6.0f;
    }
    if (symbol->height) {
        /* Half ratio */
        const float h_ratio = symbol->row_height[1] / (symbol->row_height[0] + symbol->row_height[1]); /* 0.4 */
        symbol->row_height[1] = z_stripf(symbol->height * h_ratio);
        if (symbol->row_height[1] < 0.5f) { /* Absolute minimum */
            symbol->row_height[1] = 0.5f;
            symbol->row_height[0] = z_stripf(0.5f / h_ratio - 0.5f); /* 0.75 */
        } else {
            symbol->row_height[0] = z_stripf(symbol->height - symbol->row_height[1]);
        }
    }
    symbol->height = z_stripf(symbol->row_height[0] + symbol->row_height[1]);

    if (symbol->output_options & COMPLIANT_HEIGHT) {
        if (symbol->height < 4.6f || symbol->height > 9.0f) {
            error_number = ZINT_WARN_NONCOMPLIANT;
            if (!no_errtxt) {
                z_errtxt(0, symbol, 498, "Height not compliant with standards");
            }
        }
    }

    return error_number;
}

/* Handles the POSTNET system for delivering mail by ZIP codes in the US */
/* Also handles PLANET, used to tag outgoing/return mail & identify sender */
/* Also handles Brazilian CEPNet (ZIP-like) - more info CEPNet e Código Bidimensional Datamatrix 2D (26/05/2021) at
   https://www.correios.com.br/enviar/correspondencia/arquivos/nacional/
    guia-tecnico-cepnet-e-2d-triagem-enderecamento-27-04-2021.pdf/view
 */
INTERNAL int zint_postnet(struct zint_symbol *symbol, unsigned char source[], int length) {
    /* For POSTNET/CEPNet 1 is ascender and 0 is tracker, vice versa for PLANET */
    static const char POSTNET_PLANET[10][5] = {
        { 1,1,0,0,0 }, { 0,0,0,1,1 }, { 0,0,1,0,1 }, { 0,0,1,1,0 }, { 0,1,0,0,1 },
        { 0,1,0,1,0 }, { 0,1,1,0,0 }, { 1,0,0,0,1 }, { 1,0,0,1,0 }, { 1,0,1,0,0 }
    };
    /* Suppress clang-tidy-20 garbage value false positive by initializing (see "vector.c" `vection_add_rect()`) */
    char dest[256] = {0}; /* 5 + 38 * 5 + 5 + 5 + 1 = 206 */
    char *d = dest;
    unsigned int loopey, h;
    int writer;
    int error_number = 0, warn_number;
    int i, sum, check_digit;
    const int ascender = symbol->symbology != BARCODE_PLANET; /* PLANET uses 0 for ascender, 1 for tracker */
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (length > 38) {
        return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 480, "Input length %d too long (maximum 38)", length);
    }

    if (symbol->symbology == BARCODE_CEPNET) {
        /* 5 (area) + 3 (+location within area) */
        if (length != 8) {
            error_number = z_errtxtf(ZINT_WARN_NONCOMPLIANT, symbol, 780,
                                    "Input length %d wrong (should be 8 digits)", length);
        }
    } else if (symbol->symbology == BARCODE_PLANET) {
        /* 2 (delivery/return) + 9 or 11 (identification) */
        if (length != 11 && length != 13) {
            error_number = z_errtxtf(ZINT_WARN_NONCOMPLIANT, symbol, 478,
                                    "Input length %d is not standard (should be 11 or 13 digits)", length);
        }
    } else {
        /* 5 ZIP (area), 9 ZIP+4 (+location within area), 11 ZIP+6 (+delivery point barcode) */
        if (length != 5 && length != 9 && length != 11) {
            error_number = z_errtxtf(ZINT_WARN_NONCOMPLIANT, symbol, 479,
                                    "Input length %d is not standard (should be 5, 9 or 11 digits)", length);
        }
    }
    if ((i = z_not_sane(NEON_F, source, length))) {
        return z_errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 481,
                        "Invalid character at position %d in input (digits only)", i);
    }

    /* Start character */
    *d++ = ascender;

    sum = 0;
    for (i = 0; i < length; i++, d += 5) {
        const int val = source[i] - '0';
        memcpy(d, POSTNET_PLANET[val], 5);
        sum += val;
    }

    check_digit = (10 - (sum % 10)) % 10;
    memcpy(d, POSTNET_PLANET[check_digit], 5);
    d += 5;

    if (symbol->debug & ZINT_DEBUG_PRINT) printf("Check digit: %d\n", check_digit);

    /* Stop character */
    *d++ = ascender;

    h = (unsigned int) (d - dest);
    for (loopey = 0, writer = 0; loopey < h; loopey++, writer += 2) {
        if (dest[loopey] == ascender) {
            z_set_module(symbol, 0, writer);
        }
        z_set_module(symbol, 1, writer); /* Tracker */
    }
    warn_number = usps_set_height(symbol, error_number /*no_errtxt*/);
    symbol->rows = 2;
    symbol->width = writer - 1;

    if ((symbol->show_hrt & 0x7) >= ZINT_HRT_LINEAR_ALL) {
        z_hrt_cpy_cat_nochk(symbol, source, length, (char) z_itoc(check_digit), NULL /*cat*/, 0);
    }

    if (content_segs && z_ct_cpy_cat(symbol, source, length, (char) z_itoc(check_digit), NULL /*cat*/, 0)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy_cat()` only fails with OOM */
    }

    return error_number ? error_number : warn_number;
}

/* Korean Postal Authority */
INTERNAL int zint_koreapost(struct zint_symbol *symbol, unsigned char source[], int length) {
    static const char KoreaTable[10][10] = {
        {'1','3','1','3','1','5','0','6','1','3'}, {'0','7','1','3','1','3','1','3','1','3'},
        {'0','4','1','7','1','3','1','3','1','3'}, {'1','5','0','6','1','3','1','3','1','3'},
        {'0','4','1','3','1','7','1','3','1','3'}, {              "17171313"               },
        {'1','3','1','5','0','6','1','3','1','3'}, {'0','4','1','3','1','3','1','7','1','3'},
        {              "17131713"               }, {              "13171713"               }
    };
    int total, i, check, error_number = 0;
    unsigned char local_source[8];
    char dest[80];
    char *d = dest;
    int posns[6];
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (length > 6) {
        return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 484, "Input length %d too long (maximum 6)", length);
    }
    if ((i = z_not_sane(NEON_F, source, length))) {
        return z_errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 485,
                        "Invalid character at position %d in input (digits only)", i);
    }
    z_zero_fill(source, length, local_source, 6);

    total = 0;
    for (i = 0; i < 6; i++) {
        posns[i] = z_ctoi(local_source[i]);
        total += posns[i];
    }
    check = 10 - (total % 10);
    if (check == 10) {
        check = 0;
    }
    local_source[6] = z_itoc(check);

    for (i = 5; i >= 0; i--) {
        const char *const entry = KoreaTable[posns[i]];
        memcpy(d, entry, 10);
        d += entry[8] ? 10 : 8;
    }
    memcpy(d, KoreaTable[check], 10);
    d += KoreaTable[check][8] ? 10 : 8;

    z_expand(symbol, dest, (int) (d - dest));

    /* TODO: Find documentation on BARCODE_KOREAPOST dimensions/height */

    z_hrt_cpy_nochk(symbol, local_source, 7);

    if (content_segs && z_ct_cpy(symbol, local_source, 7)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy()` only fails with OOM */
    }

    return error_number;
}

/* The simplest barcode symbology ever! Supported by MS Word, so here it is!
    glyphs from http://en.wikipedia.org/wiki/Facing_Identification_Mark */
INTERNAL int zint_fim(struct zint_symbol *symbol, unsigned char source[], int length) {
    static const char a[9] =  { '1','1','1','5','1','5','1','1','1' };
    static const char b[11] = { '1','3','1','1','1','3','1','1','1','3','1' };
    static const char c[11] = { '1','1','1','3','1','3','1','3','1','1','1' };
    static const char d[13] = { '1','1','1','1','1','3','1','3','1','1','1','1','1' };
    static const char e[7] =  { '1','3','1','7','1','3','1' };
    int error_number = 0;
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (length > 1) {
        return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 486, "Input length %d too long (maximum 1)", length);
    }

    z_to_upper(source, length);

    switch ((char) source[0]) {
        case 'A':
            z_expand(symbol, a, 9);
            break;
        case 'B':
            z_expand(symbol, b, 11);
            break;
        case 'C':
            z_expand(symbol, c, 11);
            break;
        case 'D':
            z_expand(symbol, d, 13);
            break;
        case 'E':
            z_expand(symbol, e, 7);
            break;
        default:
            return z_errtxt(ZINT_ERROR_INVALID_DATA, symbol, 487,
                            "Invalid character in input (\"A\", \"B\", \"C\", \"D\" or \"E\" only)");
            break;
    }

    if (symbol->output_options & COMPLIANT_HEIGHT) {
        /* USPS Domestic Mail Manual (USPS DMM 300) Jan 8, 2006 (updated 2011) 708.9.3
           X 0.03125" (1/32) +- 0.008" so X max 0.03925", height 0.625" (5/8) +- 0.125" (1/8) */
        const float min_height = 12.7388535f; /* 0.5 / 0.03925 */
        const float default_height = 20.0f; /* 0.625 / 0.03125 */
        const float max_height = 31.0559006f; /* 0.75 / 0.02415 */
        error_number = z_set_height(symbol, min_height, default_height, max_height, 0 /*no_errtxt*/);
    } else {
        (void) z_set_height(symbol, 0.0f, 50.0f, 0.0f, 1 /*no_errtxt*/);
    }

    if ((symbol->show_hrt & 0x7) >= ZINT_HRT_LINEAR_ALL) {
        z_hrt_cpy_nochk(symbol, source, length);
    }

    if (content_segs && z_ct_cpy(symbol, source, length)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy()` only fails with OOM */
    }

    return error_number;
}

/* Set height for DAFT-type codes, maintaining ratio. Expects row_height[0] & row_height[1] to be set */
/* Used by auspost.c also */
INTERNAL int zint_daft_set_height(struct zint_symbol *symbol, const float min_height, const float max_height) {
    int error_number = 0;

    if (symbol->height) {
        /* Tracker ratio */
        const float t_ratio = z_stripf(symbol->row_height[1] / z_stripf(symbol->row_height[0] * 2
                                        + symbol->row_height[1]));
        symbol->row_height[1] = z_stripf(symbol->height * t_ratio);
        if (symbol->row_height[1] < 0.5f) { /* Absolute minimum */
            symbol->row_height[1] = 0.5f;
            symbol->row_height[0] = z_stripf(0.25f / t_ratio - 0.25f);
        } else {
            symbol->row_height[0] = z_stripf(z_stripf(symbol->height - symbol->row_height[1]) / 2.0f);
        }
        if (symbol->row_height[0] < 0.5f) {
            symbol->row_height[0] = 0.5f;
            symbol->row_height[1] = z_stripf(t_ratio / (1.0f - t_ratio));
        }
    }
    symbol->row_height[2] = symbol->row_height[0];
    symbol->height = z_stripf(z_stripf(symbol->row_height[0] + symbol->row_height[1]) + symbol->row_height[2]);

    if (symbol->output_options & COMPLIANT_HEIGHT) {
        if ((min_height && symbol->height < min_height) || (max_height && symbol->height > max_height)) {
            error_number = z_errtxt(ZINT_WARN_NONCOMPLIANT, symbol, 499, "Height not compliant with standards");
        }
    }

    return error_number;
}

/* Helper to expand 4-states into 3 rows, where 0 = Full, 1 = Ascender, 2 = Descender, 3 Tracker (always) */
static void post_4state(struct zint_symbol *symbol, char *dest, const int length) {
    int loopey, writer;

    for (loopey = 0, writer = 0; loopey < length; loopey++, writer += 2) {
        if (dest[loopey] == 1 || dest[loopey] == 0) { /* Ascender/full */
            z_set_module(symbol, 0, writer);
        }
        z_set_module(symbol, 1, writer); /* Tracker */
        if (dest[loopey] == 2 || dest[loopey] == 0) { /* Descender/full */
            z_set_module(symbol, 2, writer);
        }
    }
    symbol->rows = 3;
    symbol->width = writer - 1;
}

/* Used by Royal Mail 4-state (& KIX) - 0 = Full, 1 = Ascender, 2 = Descender, 3 = Tracker */
static const char RM4KIX[36][4] = {
    { 3,3,0,0 }, { 3,2,1,0 }, { 3,2,0,1 }, { 2,3,1,0 }, { 2,3,0,1 }, { 2,2,1,1 },
    { 3,1,2,0 }, { 3,0,3,0 }, { 3,0,2,1 }, { 2,1,3,0 }, { 2,1,2,1 }, { 2,0,3,1 },
    { 3,1,0,2 }, { 3,0,1,2 }, { 3,0,0,3 }, { 2,1,1,2 }, { 2,1,0,3 }, { 2,0,1,3 },
    { 1,3,2,0 }, { 1,2,3,0 }, { 1,2,2,1 }, { 0,3,3,0 }, { 0,3,2,1 }, { 0,2,3,1 },
    { 1,3,0,2 }, { 1,2,1,2 }, { 1,2,0,3 }, { 0,3,1,2 }, { 0,3,0,3 }, { 0,2,1,3 },
    { 1,1,2,2 }, { 1,0,3,2 }, { 1,0,2,3 }, { 0,1,3,2 }, { 0,1,2,3 }, { 0,0,3,3 }
};

/* Handles the 4-state barcodes used in the UK by Royal Mail. Returns check_character */
static int rm4scc_enc(struct zint_symbol *symbol, const int *const posns, char *const dest, const int length,
            int *p_dest_len) {
    static const char CheckCharTopBottom[36][2] = {
        { 1, 1 }, { 1, 2 }, { 1, 3 }, { 1, 4 }, { 1, 5 }, { 1, 0 }, { 2, 1 }, { 2, 2 }, { 2, 3 }, { 2, 4 },
        { 2, 5 }, { 2, 0 }, { 3, 1 }, { 3, 2 }, { 3, 3 }, { 3, 4 }, { 3, 5 }, { 3, 0 }, { 4, 1 }, { 4, 2 },
        { 4, 3 }, { 4, 4 }, { 4, 5 }, { 4, 0 }, { 5, 1 }, { 5, 2 }, { 5, 3 }, { 5, 4 }, { 5, 5 }, { 5, 0 },
        { 0, 1 }, { 0, 2 }, { 0, 3 }, { 0, 4 }, { 0, 5 }, { 0, 0 }
    };
    int i;
    int top, bottom, row, column, check_digit;
    char *d = dest;

    top = 0;
    bottom = 0;

    /* Start character */
    *d++ = 1; /* Ascender */

    for (i = 0; i < length; i++, d += 4) {
        const int p = posns[i];
        memcpy(d, RM4KIX[p], 4);
        top += CheckCharTopBottom[p][0];
        bottom += CheckCharTopBottom[p][1];
    }

    /* Calculate the check digit */
    row = (top % 6) - 1;
    column = (bottom % 6) - 1;
    if (row == -1) {
        row = 5;
    }
    if (column == -1) {
        column = 5;
    }
    check_digit = (6 * row) + column;
    memcpy(d, RM4KIX[check_digit], 4);
    d += 4;

    if (symbol->debug & ZINT_DEBUG_PRINT) printf("Check digit: %d\n", check_digit);

    /* Stop character */
    *d++ = 0; /* Full */

    *p_dest_len = (int) (d - dest);

    return KRSET[check_digit];
}

/* Royal Mail 4-State Customer Code (RM4SCC) */
/* Also handles Dutch Post TNT KIX symbols
   The same as RM4SCC but without check digit or stop/start chars
   Specification at http://www.tntpost.nl/zakelijk/klantenservice/downloads/kIX_code/download.aspx */
INTERNAL int zint_rm4scc(struct zint_symbol *symbol, unsigned char source[], int length) {
    int i;
    char dest[210];
    int posns[50];
    int h;
    char check_digit;
    int error_number = 0;
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (symbol->symbology == BARCODE_KIX) {
        if (length > 18) {
            return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 490, "Input length %d too long (maximum 18)", length);
        }
    } else {
        if (length > 50) {
            return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 488, "Input length %d too long (maximum 50)", length);
        }
    }
    z_to_upper(source, length);
    if ((i = z_not_sane_lookup(KRSET, 36, source, length, posns))) {
        return z_errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 489,
                        "Invalid character at position %d in input (alphanumerics only)", i);
    }

    /* Encode data */
    if (symbol->symbology == BARCODE_KIX) {
        char *d = dest;
        for (i = 0; i < length; i++, d += 4) {
            memcpy(d, RM4KIX[posns[i]], 4);
        }
        h = (int) (d - dest);
        check_digit = '\xFF'; /* None */
    } else {
        check_digit = rm4scc_enc(symbol, posns, dest, length, &h);
    }

    post_4state(symbol, dest, h);

    if (symbol->output_options & COMPLIANT_HEIGHT) {
        /* Royal Mail Know How User's Manual Appendix C: using CBC
           (https://web.archive.org/web/20120120060743/
            http://www.royalmail.com/sites/default/files/docs/pdf/Know How 2006 PIP vs 1.6a Accepted Changes.pdf)
           Bar pitch and min/maxes same as Mailmark, so using recommendations from
           Royal Mail Mailmark Barcode Definition Document (15 Sept 2015) Section 3.5.1
         */
        /* KIX same */
        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 = zint_daft_set_height(symbol, min_height, max_height);
    } else {
        symbol->row_height[0] = 3.0f;
        symbol->row_height[1] = 2.0f;
        (void) zint_daft_set_height(symbol, 0.0f, 0.0f);
    }

    if ((symbol->show_hrt & 0x7) >= ZINT_HRT_LINEAR_ALL) {
        z_hrt_cpy_cat_nochk(symbol, source, length, check_digit, NULL /*cat*/, 0);
    }

    if (content_segs && z_ct_cpy_cat(symbol, source, length, check_digit, NULL /*cat*/, 0)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy_cat()` only fails with OOM */
    }

    return error_number;
}


/* Handles DAFT Code symbols */
INTERNAL int zint_daft(struct zint_symbol *symbol, unsigned char source[], int length) {
    int i;
    int posns[576];
    int loopey;
    int writer;
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (length > 576) { /* 576 * 2 = 1152 */
        return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 492, "Input length %d too long (maximum 576)", length);
    }
    z_to_upper(source, length);

    if ((i = z_not_sane_lookup(DAFTSET, 4, source, length, posns))) {
        return z_errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 493,
                        "Invalid character at position %d in input (\"D\", \"A\", \"F\" and \"T\" only)", i);
    }

    for (loopey = 0, writer = 0; loopey < length; loopey++, writer += 2) {
        if (posns[loopey] == 1 || posns[loopey] == 0) { /* Ascender/full */
            z_set_module(symbol, 0, writer);
        }
        z_set_module(symbol, 1, writer); /* Tracker */
        if (posns[loopey] == 2 || posns[loopey] == 0) { /* Descender/full */
            z_set_module(symbol, 2, writer);
        }
    }
    symbol->rows = 3;
    symbol->width = writer - 1;

    /* Allow ratio of tracker to be specified in thousandths */
    if (symbol->option_2 >= 50 && symbol->option_2 <= 900) {
        const float t_ratio = symbol->option_2 / 1000.0f;
        if (symbol->height < 0.5f) {
            symbol->height = 8.0f;
        }
        symbol->row_height[1] = z_stripf(symbol->height * t_ratio);
        symbol->row_height[0] = z_stripf((symbol->height - symbol->row_height[1]) / 2.0f);
    } else {
        symbol->row_height[0] = 3.0f;
        symbol->row_height[1] = 2.0f;
    }

    /* DAFT generic barcode so no dimensions/height specification */
    (void) zint_daft_set_height(symbol, 0.0f, 0.0f);

    if (content_segs && z_ct_cpy(symbol, source, length)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy()` only fails with OOM */
    }

    return 0;
}

/* Flattermarken - Not really a barcode symbology! */
INTERNAL int zint_flat(struct zint_symbol *symbol, unsigned char source[], int length) {
    static const char FlatTable[10][4] = {
        {'0','5','0','4'}, {     "18"      }, {'0','1','1','7'}, {'0','2','1','6'}, {'0','3','1','5'},
        {'0','4','1','4'}, {'0','5','1','3'}, {'0','6','1','2'}, {'0','7','1','1'}, {'0','8','1','0'}
    };
    int i, error_number = 0;
    char dest[512]; /* 128 * 4 = 512 */
    char *d = dest;
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (length > 128) { /* 128 * 9 = 1152 */
        return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 494, "Input length %d too long (maximum 128)", length);
    }
    if ((i = z_not_sane(NEON_F, source, length))) {
        return z_errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 495,
                        "Invalid character at position %d in input (digits only)", i);
    }

    for (i = 0; i < length; i++) {
        const char *const entry = FlatTable[source[i] - '0'];
        memcpy(d, entry, 4);
        d += entry[2] ? 4 : 2;
    }

    z_expand(symbol, dest, (int) (d - dest));

    /* TODO: Find documentation on BARCODE_FLAT dimensions/height */

    if ((symbol->show_hrt & 0x7) >= ZINT_HRT_LINEAR_ALL) {
        z_hrt_cpy_nochk(symbol, source, length);
    }

    if (content_segs && z_ct_cpy(symbol, source, length)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy()` only fails with OOM */
    }

    return error_number;
}

/* Japanese Postal Code (Kasutama Barcode) */
INTERNAL int zint_japanpost(struct zint_symbol *symbol, unsigned char source[], int length) {
    static const char JapanTable[19][3] = {
        { 0,0,3 }, { 0,2,1 }, { 2,0,1 }, { 0,1,2 }, { 0,3,0 },
        { 2,1,0 }, { 1,0,2 }, { 1,2,0 }, { 3,0,0 }, { 0,3,3 },
        { 3,0,3 }, { 2,1,3 }, { 2,3,1 }, { 1,2,3 }, { 3,2,1 },
        { 1,3,2 }, { 3,1,2 }, { 3,3,0 }, { 0,0,0 }
    };
    static const char start_stop[3] = { 0,2,0 }; /* 1st 2 chars start, last 2 chars stop */
    int error_number = 0;
    char dest[69];
    char *d = dest;
    int inter_posn, i, sum, check;
    char check_char;
    unsigned char inter[20 + 1];
    const int content_segs = symbol->output_options & BARCODE_CONTENT_SEGS;

    if (length > 20) {
        return z_errtxtf(ZINT_ERROR_TOO_LONG, symbol, 496, "Input length %d too long (maximum 20)", length);
    }

    z_to_upper(source, length);

    if ((i = z_not_sane(SHKASUTSET_F, source, length))) {
        return z_errtxtf(ZINT_ERROR_INVALID_DATA, symbol, 497,
                        "Invalid character at position %d in input (alphanumerics and \"-\" only)", i);
    }
    memset(inter, 'd', 20); /* Pad character CC4 */
    inter[20] = '\0';

    i = 0;
    inter_posn = 0;
    do {
        if (z_isdigit(source[i]) || source[i] == '-') {
            inter[inter_posn] = source[i];
            inter_posn++;
        } else {
            if (source[i] <= 'J') {
                inter[inter_posn] = 'a';
                inter[inter_posn + 1] = source[i] - 'A' + '0';
            } else if (source[i] <= 'T') {
                inter[inter_posn] = 'b';
                inter[inter_posn + 1] = source[i] - 'K' + '0';
            } else { /* (source[i] >= 'U') && (source[i] <= 'Z') */
                inter[inter_posn] = 'c';
                inter[inter_posn + 1] = source[i] - 'U' + '0';
            }
            inter_posn += 2;
        }
        i++;
    } while (i < length && inter_posn < 20);

    if (i != length || inter[20] != '\0') {
        return z_errtxt(ZINT_ERROR_TOO_LONG, symbol, 477,
                        "Input too long, requires too many symbol characters (maximum 20)");
    }

    memcpy(d, start_stop, 2); /* Start */
    d += 2;

    sum = 0;
    for (i = 0; i < 20; i++, d += 3) {
        memcpy(d, JapanTable[z_posn(KASUTSET, inter[i])], 3);
        sum += z_posn(CHKASUTSET, inter[i]);
    }

    /* Calculate check digit */
    check = 19 - (sum % 19);
    if (check == 19) {
        check = 0;
    }
    if (check <= 9) {
        check_char = check + '0';
    } else if (check == 10) {
        check_char = '-';
    } else {
        check_char = (check - 11) + 'a';
    }
    memcpy(d, JapanTable[z_posn(KASUTSET, check_char)], 3);
    d += 3;

    if (symbol->debug & ZINT_DEBUG_PRINT) printf("Check: %d, char: %c\n", check, check_char);

    memcpy(d, start_stop + 1, 2); /* Stop */
    d += 2;

    /* Resolve pattern to 4-state symbols */
    post_4state(symbol, dest, (int) (d - dest));

    if (symbol->output_options & COMPLIANT_HEIGHT) {
        /* Japan Post Zip/Barcode Manual pp.11-12 https://www.post.japanpost.jp/zipcode/zipmanual/p11.html
           X 0.6mm (0.5mm - 0.7mm)
           Tracker height 1.2mm (1.05mm - 1.35mm) / 0.6mm = 2,
           Ascender/descender = 1.2mm (Full 3.6mm (3.4mm - 3.6mm, max preferred) less T divided by 2) / 0.6mm = 2 */
        const float min_height = 4.85714293f; /* 3.4 / 0.7 */
        const float max_height = 7.19999981f; /* 3.6 / 0.5 */
        symbol->row_height[0] = 2.0f;
        symbol->row_height[1] = 2.0f;
        error_number = zint_daft_set_height(symbol, min_height, max_height);
    } else {
        symbol->row_height[0] = 3.0f;
        symbol->row_height[1] = 2.0f;
        (void) zint_daft_set_height(symbol, 0.0f, 0.0f);
    }

    if ((symbol->show_hrt & 0x7) >= ZINT_HRT_LINEAR_ALL) {
        z_hrt_cpy_nochk(symbol, source, length);
    }

    /* Note: check char is in KASUTSET and not truly representable in raw text's SHKASUTSET_F */
    if (content_segs && z_ct_cpy(symbol, source, length)) {
        return ZINT_ERROR_MEMORY; /* `z_ct_cpy()` only fails with OOM */
    }

    return error_number;
}

/* vim: set ts=4 sw=4 et : */
