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backend: define z_alloca() and use for both Unix and Windows;

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replace double-slash comments with old-skool slash asterisk ones;
  define uint16_t etc for Windows ourselves and remove ms_stdint.h &
  stdint_msvc.h as no longer used;
  (backend (excepting test suite) now C89 compatible)
LICENSE: move from backend to root and move COPYING to frontend, with
  copies in frontend_qt & backend_qt, so in where it applies;
  add LICENSE section from manual to root README
This commit is contained in:
gitlost 2022-07-14 16:01:30 +01:00
parent 5ee3895bca
commit 930f458979
70 changed files with 2650 additions and 2038 deletions
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58
backend/gridmtx.c
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@ -1,5 +1,5 @@
/* gridmtx.c - Grid Matrix
/* gridmtx.c - Grid Matrix */
/*
libzint - the open source barcode library
Copyright (C) 2009-2022 Robin Stuart <rstuart114@gmail.com>
@ -34,9 +34,6 @@
AIM Global Document Number AIMD014 Rev. 1.63 Revised 9 Dec 2008 */
#include <stdio.h>
#ifdef _MSC_VER
#include <malloc.h>
#endif
#include "common.h"
#include "reedsol.h"
#include "gridmtx.h"
@ -164,11 +161,7 @@ static void gm_define_mode(char *mode, const unsigned int ddata[], const int len
char cur_mode;
unsigned int prev_costs[GM_NUM_MODES];
unsigned int cur_costs[GM_NUM_MODES];
#ifndef _MSC_VER
char char_modes[length * GM_NUM_MODES];
#else
char *char_modes = (char *) _alloca(length * GM_NUM_MODES);
#endif
char *char_modes = (char *) z_alloca(length * GM_NUM_MODES);
/* char_modes[i * GM_NUM_MODES + j] represents the mode to encode the code point at index i such that the final
* segment ends in mode_types[j] and the total number of bits is minimized over all possible choices */
@ -345,11 +338,7 @@ static int gm_encode(unsigned int ddata[], const int length, char binary[], cons
int byte_count = 0;
int shift;
int bp = *p_bp;
#ifndef _MSC_VER
char mode[length];
#else
char *mode = (char *) _alloca(length);
#endif
char *mode = (char *) z_alloca(length);
if (eci != 0) {
/* ECI assignment according to Table 8 */
@ -407,13 +396,13 @@ static int gm_encode(unsigned int ddata[], const int length, char binary[], cons
switch (p) {
case 1: binary[number_pad_posn] = '1';
binary[number_pad_posn + 1] = '0';
break; // 2 pad digits
break; /* 2 pad digits */
case 2: binary[number_pad_posn] = '0';
binary[number_pad_posn + 1] = '1';
break; // 1 pad digits
break; /* 1 pad digits */
case 3: binary[number_pad_posn] = '0';
binary[number_pad_posn + 1] = '0';
break; // 0 pad digits
break; /* 0 pad digits */
}
switch (next_mode) {
case GM_CHINESE: bp = bin_append_posn(1019, 10, binary, bp);
@ -739,13 +728,13 @@ static int gm_encode(unsigned int ddata[], const int length, char binary[], cons
switch (p) {
case 1: binary[number_pad_posn] = '1';
binary[number_pad_posn + 1] = '0';
break; // 2 pad digits
break; /* 2 pad digits */
case 2: binary[number_pad_posn] = '0';
binary[number_pad_posn + 1] = '1';
break; // 1 pad digit
break; /* 1 pad digit */
case 3: binary[number_pad_posn] = '0';
binary[number_pad_posn + 1] = '0';
break; // 0 pad digits
break; /* 0 pad digits */
}
}
@ -979,14 +968,8 @@ static void gm_place_data_in_grid(unsigned char word[], char grid[], int modules
/* Place the layer ID into each macromodule */
static void gm_place_layer_id(char *grid, int size, int layers, int modules, int ecc_level) {
int i, j, layer, start, stop;
#ifndef _MSC_VER
int layerid[layers + 1];
int id[modules * modules];
#else
int *layerid = (int *) _alloca((layers + 1) * sizeof(int));
int *id = (int *) _alloca((modules * modules) * sizeof(int));
#endif
int *layerid = (int *) z_alloca(sizeof(int) * (layers + 1));
int *id = (int *) z_alloca(sizeof(int) * (modules * modules));
/* Calculate Layer IDs */
for (i = 0; i <= layers; i++) {
@ -1045,15 +1028,9 @@ INTERNAL int gridmatrix(struct zint_symbol *symbol, struct zint_seg segs[], cons
int bin_len;
const int debug_print = symbol->debug & ZINT_DEBUG_PRINT;
const int eci_length_segs = get_eci_length_segs(segs, seg_count);
#ifndef _MSC_VER
struct zint_seg local_segs[seg_count];
unsigned int ddata[eci_length_segs];
#else
struct zint_seg *local_segs = (struct zint_seg *) _alloca(sizeof(struct zint_seg) * seg_count);
unsigned int *ddata = (unsigned int *) _alloca(sizeof(unsigned int) * eci_length_segs);
struct zint_seg *local_segs = (struct zint_seg *) z_alloca(sizeof(struct zint_seg) * seg_count);
unsigned int *ddata = (unsigned int *) z_alloca(sizeof(unsigned int) * eci_length_segs);
char *grid;
#endif
segs_cpy(symbol, segs, seg_count, local_segs); /* Shallow copy (needed to set default ECIs & protect lengths) */
@ -1224,12 +1201,7 @@ INTERNAL int gridmatrix(struct zint_symbol *symbol, struct zint_seg segs[], cons
modules = 1 + (layers * 2);
size_squared = size * size;
#ifndef _MSC_VER
char grid[size_squared];
#else
grid = (char *) _alloca(size_squared);
#endif
grid = (char *) z_alloca(size_squared);
memset(grid, '0', size_squared);
gm_place_data_in_grid(word, grid, modules, size);