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thorvg: Update to 0.10.7

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Fixes #81618.
This commit is contained in:
Rémi Verschelde 2023-09-18 14:49:04 +02:00
parent b905959f43
commit 81949c2cd2
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GPG key ID: C3336907360768E1
52 changed files with 2006 additions and 1636 deletions
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223
thirdparty/thorvg/src/loaders/svg/tvgSvgUtil.cpp vendored
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@ -21,19 +21,12 @@
*/
#include <cstring>
#include <math.h>
#include <memory.h>
#include "tvgSvgUtil.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
static inline bool _floatExact(float a, float b)
{
return memcmp(&a, &b, sizeof(float)) == 0;
}
static uint8_t _hexCharToDec(const char c)
{
if (c >= 'a') return c - 'a' + 10;
@ -41,181 +34,11 @@ static uint8_t _hexCharToDec(const char c)
else return c - '0';
}
static uint8_t _base64Value(const char chr)
{
if (chr >= 'A' && chr <= 'Z') return chr - 'A';
else if (chr >= 'a' && chr <= 'z') return chr - 'a' + ('Z' - 'A') + 1;
else if (chr >= '0' && chr <= '9') return chr - '0' + ('Z' - 'A') + ('z' - 'a') + 2;
else if (chr == '+' || chr == '-') return 62;
else return 63;
}
/************************************************************************/
/* External Class Implementation */
/************************************************************************/
/*
* https://docs.microsoft.com/en-us/cpp/c-runtime-library/reference/strtof-strtof-l-wcstof-wcstof-l?view=msvc-160
*
* src should be one of the following form :
*
* [whitespace] [sign] {digits [radix digits] | radix digits} [{e | E} [sign] digits]
* [whitespace] [sign] {INF | INFINITY}
* [whitespace] [sign] NAN [sequence]
*
* No hexadecimal form supported
* no sequence supported after NAN
*/
float svgUtilStrtof(const char *nPtr, char **endPtr)
{
if (endPtr) *endPtr = (char*)(nPtr);
if (!nPtr) return 0.0f;
auto a = nPtr;
auto iter = nPtr;
auto val = 0.0f;
unsigned long long integerPart = 0;
int minus = 1;
//ignore leading whitespaces
while (isspace(*iter)) iter++;
//signed or not
if (*iter == '-') {
minus = -1;
iter++;
} else if (*iter == '+') {
iter++;
}
if (tolower(*iter) == 'i') {
if ((tolower(*(iter + 1)) == 'n') && (tolower(*(iter + 2)) == 'f')) iter += 3;
else goto error;
if (tolower(*(iter)) == 'i') {
if ((tolower(*(iter + 1)) == 'n') && (tolower(*(iter + 2)) == 'i') && (tolower(*(iter + 3)) == 't') && (tolower(*(iter + 4)) == 'y')) iter += 5;
else goto error;
}
if (endPtr) *endPtr = (char *)(iter);
return (minus == -1) ? -INFINITY : INFINITY;
}
if (tolower(*iter) == 'n') {
if ((tolower(*(iter + 1)) == 'a') && (tolower(*(iter + 2)) == 'n')) iter += 3;
else goto error;
if (endPtr) *endPtr = (char *)(iter);
return (minus == -1) ? -NAN : NAN;
}
//Optional: integer part before dot
if (isdigit(*iter)) {
for (; isdigit(*iter); iter++) {
integerPart = integerPart * 10ULL + (unsigned long long)(*iter - '0');
}
a = iter;
} else if (*iter != '.') {
goto success;
}
val = static_cast<float>(integerPart);
//Optional: decimal part after dot
if (*iter == '.') {
unsigned long long decimalPart = 0;
unsigned long long pow10 = 1;
int count = 0;
iter++;
if (isdigit(*iter)) {
for (; isdigit(*iter); iter++, count++) {
if (count < 19) {
decimalPart = decimalPart * 10ULL + + static_cast<unsigned long long>(*iter - '0');
pow10 *= 10ULL;
}
}
} else if (isspace(*iter)) { //skip if there is a space after the dot.
a = iter;
goto success;
}
val += static_cast<float>(decimalPart) / static_cast<float>(pow10);
a = iter;
}
//Optional: exponent
if (*iter == 'e' || *iter == 'E') {
++iter;
//Exception: svg may have 'em' unit for fonts. ex) 5em, 10.5em
if ((*iter == 'm') || (*iter == 'M')) {
//TODO: We don't support font em unit now, but has to multiply val * font size later...
a = iter + 1;
goto success;
}
//signed or not
int minus_e = 1;
if (*iter == '-') {
minus_e = -1;
++iter;
} else if (*iter == '+') {
iter++;
}
unsigned int exponentPart = 0;
if (isdigit(*iter)) {
while (*iter == '0') iter++;
for (; isdigit(*iter); iter++) {
exponentPart = exponentPart * 10U + static_cast<unsigned int>(*iter - '0');
}
} else if (!isdigit(*(a - 1))) {
a = nPtr;
goto success;
} else if (*iter == 0) {
goto success;
}
//if ((_floatExact(val, 2.2250738585072011f)) && ((minus_e * static_cast<int>(exponentPart)) <= -308)) {
if ((_floatExact(val, 1.175494351f)) && ((minus_e * static_cast<int>(exponentPart)) <= -38)) {
//val *= 1.0e-308f;
val *= 1.0e-38f;
a = iter;
goto success;
}
a = iter;
auto scale = 1.0f;
while (exponentPart >= 8U) {
scale *= 1E8;
exponentPart -= 8U;
}
while (exponentPart > 0U) {
scale *= 10.0f;
exponentPart--;
}
val = (minus_e == -1) ? (val / scale) : (val * scale);
} else if ((iter > nPtr) && !isdigit(*(iter - 1))) {
a = nPtr;
goto success;
}
success:
if (endPtr) *endPtr = (char*)(a);
return minus * val;
error:
if (endPtr) *endPtr = (char*)(nPtr);
return 0.0f;
}
string svgUtilURLDecode(const char *src)
{
if (!src) return nullptr;
@ -242,49 +65,3 @@ string svgUtilURLDecode(const char *src)
}
return decoded;
}
string svgUtilBase64Decode(const char *src)
{
if (!src) return nullptr;
auto length = strlen(src);
if (length == 0) return nullptr;
string decoded;
decoded.reserve(3*(1+(length >> 2)));
while (*src && *(src+1)) {
if (*src <= 0x20) {
++src;
continue;
}
auto value1 = _base64Value(src[0]);
auto value2 = _base64Value(src[1]);
decoded += (value1 << 2) + ((value2 & 0x30) >> 4);
if (!src[2] || src[2] == '=' || src[2] == '.') break;
auto value3 = _base64Value(src[2]);
decoded += ((value2 & 0x0f) << 4) + ((value3 & 0x3c) >> 2);
if (!src[3] || src[3] == '=' || src[3] == '.') break;
auto value4 = _base64Value(src[3]);
decoded += ((value3 & 0x03) << 6) + value4;
src += 4;
}
return decoded;
}
char* svgUtilStrndup(const char* str, size_t n)
{
auto len = strlen(str);
if (len < n) n = len;
auto ret = (char*)malloc(n + 1);
if (!ret) return nullptr;
ret[n] = '\0';
return (char*)memcpy(ret, str, n);
}