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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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52
backend/eci.c
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@ -1,5 +1,5 @@
/* eci.c - Extended Channel Interpretations
/* eci.c - Extended Channel Interpretations */
/*
libzint - the open source barcode library
Copyright (C) 2009-2022 Robin Stuart <rstuart114@gmail.com>
@ -31,9 +31,6 @@
/* SPDX-License-Identifier: BSD-3-Clause */
#include <assert.h>
#ifdef _MSC_VER
#include <malloc.h>
#endif
#include "common.h"
#include "eci.h"
#include "eci_sb.h"
@ -770,13 +767,8 @@ INTERNAL int utf8_to_eci(const int eci, const unsigned char source[], unsigned c
/* Find the lowest single-byte ECI mode which will encode a given set of Unicode text */
INTERNAL int get_best_eci(const unsigned char source[], int length) {
int eci = 3;
/* Note: attempting single-byte conversions only, so get_eci_length() unnecessary */
#ifndef _MSC_VER
unsigned char local_source[length + 1];
#else
unsigned char *local_source = (unsigned char *) _alloca(length + 1);
#endif
unsigned char *local_source = (unsigned char *) z_alloca(length + 1);
do {
if (eci == 14) { /* Reserved */
@ -794,7 +786,7 @@ INTERNAL int get_best_eci(const unsigned char source[], int length) {
return 0;
}
return 26; // If all of these fail, use UTF-8!
return 26; /* If all of these fail, use UTF-8! */
}
/* Call `get_best_eci()` for each segment. Returns 0 on failure, first ECI set on success */
@ -838,11 +830,7 @@ INTERNAL int sjis_utf8(struct zint_symbol *symbol, const unsigned char source[],
unsigned int *ddata) {
int error_number;
unsigned int i, length;
#ifndef _MSC_VER
unsigned int utfdata[*p_length + 1];
#else
unsigned int *utfdata = (unsigned int *) _alloca((*p_length + 1) * sizeof(unsigned int));
#endif
unsigned int *utfdata = (unsigned int *) z_alloca(sizeof(unsigned int) * (*p_length + 1));
error_number = utf8_to_unicode(symbol, source, utfdata, p_length, 1 /*disallow_4byte*/);
if (error_number != 0) {
@ -911,11 +899,7 @@ INTERNAL int sjis_utf8_to_eci(const int eci, const unsigned char source[], int *
if (is_eci_convertible(eci)) {
int error_number;
const int eci_length = get_eci_length(eci, source, *p_length);
#ifndef _MSC_VER
unsigned char converted[eci_length + 1];
#else
unsigned char *converted = (unsigned char *) _alloca(eci_length + 1);
#endif
unsigned char *converted = (unsigned char *) z_alloca(eci_length + 1);
error_number = utf8_to_eci(eci, source, converted, p_length);
if (error_number != 0) {
@ -938,11 +922,7 @@ INTERNAL int gb2312_utf8(struct zint_symbol *symbol, const unsigned char source[
unsigned int *ddata) {
int error_number;
unsigned int i, length;
#ifndef _MSC_VER
unsigned int utfdata[*p_length + 1];
#else
unsigned int *utfdata = (unsigned int *) _alloca((*p_length + 1) * sizeof(unsigned int));
#endif
unsigned int *utfdata = (unsigned int *) z_alloca(sizeof(unsigned int) * (*p_length + 1));
error_number = utf8_to_unicode(symbol, source, utfdata, p_length, 1 /*disallow_4byte*/);
if (error_number != 0) {
@ -1022,11 +1002,7 @@ INTERNAL int gb2312_utf8_to_eci(const int eci, const unsigned char source[], int
if (is_eci_convertible(eci)) {
int error_number;
const int eci_length = get_eci_length(eci, source, *p_length);
#ifndef _MSC_VER
unsigned char converted[eci_length + 1];
#else
unsigned char *converted = (unsigned char *) _alloca(eci_length + 1);
#endif
unsigned char *converted = (unsigned char *) z_alloca(eci_length + 1);
error_number = utf8_to_eci(eci, source, converted, p_length);
if (error_number != 0) {
@ -1049,11 +1025,7 @@ INTERNAL int gb18030_utf8(struct zint_symbol *symbol, const unsigned char source
unsigned int *ddata) {
int error_number, ret;
unsigned int i, j, length;
#ifndef _MSC_VER
unsigned int utfdata[*p_length + 1];
#else
unsigned int *utfdata = (unsigned int *) _alloca((*p_length + 1) * sizeof(unsigned int));
#endif
unsigned int *utfdata = (unsigned int *) z_alloca(sizeof(unsigned int) * (*p_length + 1));
error_number = utf8_to_unicode(symbol, source, utfdata, p_length, 0 /*disallow_4byte*/);
if (error_number != 0) {
@ -1150,11 +1122,7 @@ INTERNAL int gb18030_utf8_to_eci(const int eci, const unsigned char source[], in
if (is_eci_convertible(eci)) {
int error_number;
const int eci_length = get_eci_length(eci, source, *p_length);
#ifndef _MSC_VER
unsigned char converted[eci_length + 1];
#else
unsigned char *converted = (unsigned char *) _alloca(eci_length + 1);
#endif
unsigned char *converted = (unsigned char *) z_alloca(eci_length + 1);
error_number = utf8_to_eci(eci, source, converted, p_length);
if (error_number != 0) {