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cmscgats.c
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cmscgats.c
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/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
// This file is available under and governed by the GNU General Public
// License version 2 only, as published by the Free Software Foundation.
// However, the following notice accompanied the original version of this
// file:
//
//---------------------------------------------------------------------------------
//
// Little Color Management System
// Copyright (c) 1998-2020 Marti Maria Saguer
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the Software
// is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
//---------------------------------------------------------------------------------
//
#include "lcms2_internal.h"
// IT8.7 / CGATS.17-200x handling -----------------------------------------------------------------------------
#define MAXID 128 // Max length of identifier
#define MAXSTR 1024 // Max length of string
#define MAXTABLES 255 // Max Number of tables in a single stream
#define MAXINCLUDE 20 // Max number of nested includes
#define DEFAULT_DBL_FORMAT "%.10g" // Double formatting
#ifdef CMS_IS_WINDOWS_
# include <io.h>
# define DIR_CHAR '\\'
#else
# define DIR_CHAR '/'
#endif
// Symbols
typedef enum {
SUNDEFINED,
SINUM, // Integer
SDNUM, // Real
SIDENT, // Identifier
SSTRING, // string
SCOMMENT, // comment
SEOLN, // End of line
SEOF, // End of stream
SSYNERROR, // Syntax error found on stream
// Keywords
SBEGIN_DATA,
SBEGIN_DATA_FORMAT,
SEND_DATA,
SEND_DATA_FORMAT,
SKEYWORD,
SDATA_FORMAT_ID,
SINCLUDE
} SYMBOL;
// How to write the value
typedef enum {
WRITE_UNCOOKED,
WRITE_STRINGIFY,
WRITE_HEXADECIMAL,
WRITE_BINARY,
WRITE_PAIR
} WRITEMODE;
// Linked list of variable names
typedef struct _KeyVal {
struct _KeyVal* Next;
char* Keyword; // Name of variable
struct _KeyVal* NextSubkey; // If key is a dictionary, points to the next item
char* Subkey; // If key is a dictionary, points to the subkey name
char* Value; // Points to value
WRITEMODE WriteAs; // How to write the value
} KEYVALUE;
// Linked list of memory chunks (Memory sink)
typedef struct _OwnedMem {
struct _OwnedMem* Next;
void * Ptr; // Point to value
} OWNEDMEM;
// Suballocator
typedef struct _SubAllocator {
cmsUInt8Number* Block;
cmsUInt32Number BlockSize;
cmsUInt32Number Used;
} SUBALLOCATOR;
// Table. Each individual table can hold properties and rows & cols
typedef struct _Table {
char SheetType[MAXSTR]; // The first row of the IT8 (the type)
int nSamples, nPatches; // Cols, Rows
int SampleID; // Pos of ID
KEYVALUE* HeaderList; // The properties
char** DataFormat; // The binary stream descriptor
char** Data; // The binary stream
} TABLE;
// File stream being parsed
typedef struct _FileContext {
char FileName[cmsMAX_PATH]; // File name if being read from file
FILE* Stream; // File stream or NULL if holded in memory
} FILECTX;
// This struct hold all information about an open IT8 handler.
typedef struct {
cmsUInt32Number TablesCount; // How many tables in this stream
cmsUInt32Number nTable; // The actual table
TABLE Tab[MAXTABLES];
// Memory management
OWNEDMEM* MemorySink; // The storage backend
SUBALLOCATOR Allocator; // String suballocator -- just to keep it fast
// Parser state machine
SYMBOL sy; // Current symbol
int ch; // Current character
cmsInt32Number inum; // integer value
cmsFloat64Number dnum; // real value
char id[MAXID]; // identifier
char str[MAXSTR]; // string
// Allowed keywords & datasets. They have visibility on whole stream
KEYVALUE* ValidKeywords;
KEYVALUE* ValidSampleID;
char* Source; // Points to loc. being parsed
cmsInt32Number lineno; // line counter for error reporting
FILECTX* FileStack[MAXINCLUDE]; // Stack of files being parsed
cmsInt32Number IncludeSP; // Include Stack Pointer
char* MemoryBlock; // The stream if holded in memory
char DoubleFormatter[MAXID];// Printf-like 'cmsFloat64Number' formatter
cmsContext ContextID; // The threading context
} cmsIT8;
// The stream for save operations
typedef struct {
FILE* stream; // For save-to-file behaviour
cmsUInt8Number* Base;
cmsUInt8Number* Ptr; // For save-to-mem behaviour
cmsUInt32Number Used;
cmsUInt32Number Max;
} SAVESTREAM;
// ------------------------------------------------------ cmsIT8 parsing routines
// A keyword
typedef struct {
const char *id;
SYMBOL sy;
} KEYWORD;
// The keyword->symbol translation table. Sorting is required.
static const KEYWORD TabKeys[] = {
{"$INCLUDE", SINCLUDE}, // This is an extension!
{".INCLUDE", SINCLUDE}, // This is an extension!
{"BEGIN_DATA", SBEGIN_DATA },
{"BEGIN_DATA_FORMAT", SBEGIN_DATA_FORMAT },
{"DATA_FORMAT_IDENTIFIER", SDATA_FORMAT_ID},
{"END_DATA", SEND_DATA},
{"END_DATA_FORMAT", SEND_DATA_FORMAT},
{"KEYWORD", SKEYWORD}
};
#define NUMKEYS (sizeof(TabKeys)/sizeof(KEYWORD))
// Predefined properties
// A property
typedef struct {
const char *id; // The identifier
WRITEMODE as; // How is supposed to be written
} PROPERTY;
static PROPERTY PredefinedProperties[] = {
{"NUMBER_OF_FIELDS", WRITE_UNCOOKED}, // Required - NUMBER OF FIELDS
{"NUMBER_OF_SETS", WRITE_UNCOOKED}, // Required - NUMBER OF SETS
{"ORIGINATOR", WRITE_STRINGIFY}, // Required - Identifies the specific system, organization or individual that created the data file.
{"FILE_DESCRIPTOR", WRITE_STRINGIFY}, // Required - Describes the purpose or contents of the data file.
{"CREATED", WRITE_STRINGIFY}, // Required - Indicates date of creation of the data file.
{"DESCRIPTOR", WRITE_STRINGIFY}, // Required - Describes the purpose or contents of the data file.
{"DIFFUSE_GEOMETRY", WRITE_STRINGIFY}, // The diffuse geometry used. Allowed values are "sphere" or "opal".
{"MANUFACTURER", WRITE_STRINGIFY},
{"MANUFACTURE", WRITE_STRINGIFY}, // Some broken Fuji targets does store this value
{"PROD_DATE", WRITE_STRINGIFY}, // Identifies year and month of production of the target in the form yyyy:mm.
{"SERIAL", WRITE_STRINGIFY}, // Uniquely identifies individual physical target.
{"MATERIAL", WRITE_STRINGIFY}, // Identifies the material on which the target was produced using a code
// uniquely identifying th e material. This is intend ed to be used for IT8.7
// physical targets only (i.e . IT8.7/1 a nd IT8.7/2).
{"INSTRUMENTATION", WRITE_STRINGIFY}, // Used to report the specific instrumentation used (manufacturer and
// model number) to generate the data reported. This data will often
// provide more information about the particular data collected than an
// extensive list of specific details. This is particularly important for
// spectral data or data derived from spectrophotometry.
{"MEASUREMENT_SOURCE", WRITE_STRINGIFY}, // Illumination used for spectral measurements. This data helps provide
// a guide to the potential for issues of paper fluorescence, etc.
{"PRINT_CONDITIONS", WRITE_STRINGIFY}, // Used to define the characteristics of the printed sheet being reported.
// Where standard conditions have been defined (e.g., SWOP at nominal)
// named conditions may suffice. Otherwise, detailed information is
// needed.
{"SAMPLE_BACKING", WRITE_STRINGIFY}, // Identifies the backing material used behind the sample during
// measurement. Allowed values are "black", "white", or {"na".
{"CHISQ_DOF", WRITE_STRINGIFY}, // Degrees of freedom associated with the Chi squared statistic
// below properties are new in recent specs:
{"MEASUREMENT_GEOMETRY", WRITE_STRINGIFY}, // The type of measurement, either reflection or transmission, should be indicated
// along with details of the geometry and the aperture size and shape. For example,
// for transmission measurements it is important to identify 0/diffuse, diffuse/0,
// opal or integrating sphere, etc. For reflection it is important to identify 0/45,
// 45/0, sphere (specular included or excluded), etc.
{"FILTER", WRITE_STRINGIFY}, // Identifies the use of physical filter(s) during measurement. Typically used to
// denote the use of filters such as none, D65, Red, Green or Blue.
{"POLARIZATION", WRITE_STRINGIFY}, // Identifies the use of a physical polarization filter during measurement. Allowed
// values are {"yes", "white", "none" or "na".
{"WEIGHTING_FUNCTION", WRITE_PAIR}, // Indicates such functions as: the CIE standard observer functions used in the
// calculation of various data parameters (2 degree and 10 degree), CIE standard
// illuminant functions used in the calculation of various data parameters (e.g., D50,
// D65, etc.), density status response, etc. If used there shall be at least one
// name-value pair following the WEIGHTING_FUNCTION tag/keyword. The first attribute
// in the set shall be {"name" and shall identify the particular parameter used.
// The second shall be {"value" and shall provide the value associated with that name.
// For ASCII data, a string containing the Name and Value attribute pairs shall follow
// the weighting function keyword. A semi-colon separates attribute pairs from each
// other and within the attribute the name and value are separated by a comma.
{"COMPUTATIONAL_PARAMETER", WRITE_PAIR}, // Parameter that is used in computing a value from measured data. Name is the name
// of the calculation, parameter is the name of the parameter used in the calculation
// and value is the value of the parameter.
{"TARGET_TYPE", WRITE_STRINGIFY}, // The type of target being measured, e.g. IT8.7/1, IT8.7/3, user defined, etc.
{"COLORANT", WRITE_STRINGIFY}, // Identifies the colorant(s) used in creating the target.
{"TABLE_DESCRIPTOR", WRITE_STRINGIFY}, // Describes the purpose or contents of a data table.
{"TABLE_NAME", WRITE_STRINGIFY} // Provides a short name for a data table.
};
#define NUMPREDEFINEDPROPS (sizeof(PredefinedProperties)/sizeof(PROPERTY))
// Predefined sample types on dataset
static const char* PredefinedSampleID[] = {
"SAMPLE_ID", // Identifies sample that data represents
"STRING", // Identifies label, or other non-machine readable value.
// Value must begin and end with a " symbol
"CMYK_C", // Cyan component of CMYK data expressed as a percentage
"CMYK_M", // Magenta component of CMYK data expressed as a percentage
"CMYK_Y", // Yellow component of CMYK data expressed as a percentage
"CMYK_K", // Black component of CMYK data expressed as a percentage
"D_RED", // Red filter density
"D_GREEN", // Green filter density
"D_BLUE", // Blue filter density
"D_VIS", // Visual filter density
"D_MAJOR_FILTER", // Major filter d ensity
"RGB_R", // Red component of RGB data
"RGB_G", // Green component of RGB data
"RGB_B", // Blue com ponent of RGB data
"SPECTRAL_NM", // Wavelength of measurement expressed in nanometers
"SPECTRAL_PCT", // Percentage reflectance/transmittance
"SPECTRAL_DEC", // Reflectance/transmittance
"XYZ_X", // X component of tristimulus data
"XYZ_Y", // Y component of tristimulus data
"XYZ_Z", // Z component of tristimulus data
"XYY_X", // x component of chromaticity data
"XYY_Y", // y component of chromaticity data
"XYY_CAPY", // Y component of tristimulus data
"LAB_L", // L* component of Lab data
"LAB_A", // a* component of Lab data
"LAB_B", // b* component of Lab data
"LAB_C", // C*ab component of Lab data
"LAB_H", // hab component of Lab data
"LAB_DE", // CIE dE
"LAB_DE_94", // CIE dE using CIE 94
"LAB_DE_CMC", // dE using CMC
"LAB_DE_2000", // CIE dE using CIE DE 2000
"MEAN_DE", // Mean Delta E (LAB_DE) of samples compared to batch average
// (Used for data files for ANSI IT8.7/1 and IT8.7/2 targets)
"STDEV_X", // Standard deviation of X (tristimulus data)
"STDEV_Y", // Standard deviation of Y (tristimulus data)
"STDEV_Z", // Standard deviation of Z (tristimulus data)
"STDEV_L", // Standard deviation of L*
"STDEV_A", // Standard deviation of a*
"STDEV_B", // Standard deviation of b*
"STDEV_DE", // Standard deviation of CIE dE
"CHI_SQD_PAR"}; // The average of the standard deviations of L*, a* and b*. It is
// used to derive an estimate of the chi-squared parameter which is
// recommended as the predictor of the variability of dE
#define NUMPREDEFINEDSAMPLEID (sizeof(PredefinedSampleID)/sizeof(char *))
//Forward declaration of some internal functions
static void* AllocChunk(cmsIT8* it8, cmsUInt32Number size);
// Checks whatever c is a separator
static
cmsBool isseparator(int c)
{
return (c == ' ') || (c == '\t') ;
}
// Checks whatever c is a valid identifier char
static
cmsBool ismiddle(int c)
{
return (!isseparator(c) && (c != '#') && (c !='\"') && (c != '\'') && (c > 32) && (c < 127));
}
// Checks whatsever c is a valid identifier middle char.
static
cmsBool isidchar(int c)
{
return isalnum(c) || ismiddle(c);
}
// Checks whatsever c is a valid identifier first char.
static
cmsBool isfirstidchar(int c)
{
return !isdigit(c) && ismiddle(c);
}
// Guess whether the supplied path looks like an absolute path
static
cmsBool isabsolutepath(const char *path)
{
char ThreeChars[4];
if(path == NULL)
return FALSE;
if (path[0] == 0)
return FALSE;
strncpy(ThreeChars, path, 3);
ThreeChars[3] = 0;
if(ThreeChars[0] == DIR_CHAR)
return TRUE;
#ifdef CMS_IS_WINDOWS_
if (isalpha((int) ThreeChars[0]) && ThreeChars[1] == ':')
return TRUE;
#endif
return FALSE;
}
// Makes a file path based on a given reference path
// NOTE: this function doesn't check if the path exists or even if it's legal
static
cmsBool BuildAbsolutePath(const char *relPath, const char *basePath, char *buffer, cmsUInt32Number MaxLen)
{
char *tail;
cmsUInt32Number len;
// Already absolute?
if (isabsolutepath(relPath)) {
strncpy(buffer, relPath, MaxLen);
buffer[MaxLen-1] = 0;
return TRUE;
}
// No, search for last
strncpy(buffer, basePath, MaxLen);
buffer[MaxLen-1] = 0;
tail = strrchr(buffer, DIR_CHAR);
if (tail == NULL) return FALSE; // Is not absolute and has no separators??
len = (cmsUInt32Number) (tail - buffer);
if (len >= MaxLen) return FALSE;
// No need to assure zero terminator over here
strncpy(tail + 1, relPath, MaxLen - len);
return TRUE;
}
// Make sure no exploit is being even tried
static
const char* NoMeta(const char* str)
{
if (strchr(str, '%') != NULL)
return "**** CORRUPTED FORMAT STRING ***";
return str;
}
// Syntax error
static
cmsBool SynError(cmsIT8* it8, const char *Txt, ...)
{
char Buffer[256], ErrMsg[1024];
va_list args;
va_start(args, Txt);
vsnprintf(Buffer, 255, Txt, args);
Buffer[255] = 0;
va_end(args);
snprintf(ErrMsg, 1023, "%s: Line %d, %s", it8->FileStack[it8 ->IncludeSP]->FileName, it8->lineno, Buffer);
ErrMsg[1023] = 0;
it8->sy = SSYNERROR;
cmsSignalError(it8 ->ContextID, cmsERROR_CORRUPTION_DETECTED, "%s", ErrMsg);
return FALSE;
}
// Check if current symbol is same as specified. issue an error else.
static
cmsBool Check(cmsIT8* it8, SYMBOL sy, const char* Err)
{
if (it8 -> sy != sy)
return SynError(it8, NoMeta(Err));
return TRUE;
}
// Read Next character from stream
static
void NextCh(cmsIT8* it8)
{
if (it8 -> FileStack[it8 ->IncludeSP]->Stream) {
it8 ->ch = fgetc(it8 ->FileStack[it8 ->IncludeSP]->Stream);
if (feof(it8 -> FileStack[it8 ->IncludeSP]->Stream)) {
if (it8 ->IncludeSP > 0) {
fclose(it8 ->FileStack[it8->IncludeSP--]->Stream);
it8 -> ch = ' '; // Whitespace to be ignored
} else
it8 ->ch = 0; // EOF
}
}
else {
it8->ch = *it8->Source;
if (it8->ch) it8->Source++;
}
}
// Try to see if current identifier is a keyword, if so return the referred symbol
static
SYMBOL BinSrchKey(const char *id)
{
int l = 1;
int r = NUMKEYS;
int x, res;
while (r >= l)
{
x = (l+r)/2;
res = cmsstrcasecmp(id, TabKeys[x-1].id);
if (res == 0) return TabKeys[x-1].sy;
if (res < 0) r = x - 1;
else l = x + 1;
}
return SUNDEFINED;
}
// 10 ^n
static
cmsFloat64Number xpow10(int n)
{
return pow(10, (cmsFloat64Number) n);
}
// Reads a Real number, tries to follow from integer number
static
void ReadReal(cmsIT8* it8, cmsInt32Number inum)
{
it8->dnum = (cmsFloat64Number)inum;
while (isdigit(it8->ch)) {
it8->dnum = (cmsFloat64Number)it8->dnum * 10.0 + (cmsFloat64Number)(it8->ch - '0');
NextCh(it8);
}
if (it8->ch == '.') { // Decimal point
cmsFloat64Number frac = 0.0; // fraction
int prec = 0; // precision
NextCh(it8); // Eats dec. point
while (isdigit(it8->ch)) {
frac = frac * 10.0 + (cmsFloat64Number)(it8->ch - '0');
prec++;
NextCh(it8);
}
it8->dnum = it8->dnum + (frac / xpow10(prec));
}
// Exponent, example 34.00E+20
if (toupper(it8->ch) == 'E') {
cmsInt32Number e;
cmsInt32Number sgn;
NextCh(it8); sgn = 1;
if (it8->ch == '-') {
sgn = -1; NextCh(it8);
}
else
if (it8->ch == '+') {
sgn = +1;
NextCh(it8);
}
e = 0;
while (isdigit(it8->ch)) {
cmsInt32Number digit = (it8->ch - '0');
if ((cmsFloat64Number)e * 10.0 + (cmsFloat64Number)digit < (cmsFloat64Number)+2147483647.0)
e = e * 10 + digit;
NextCh(it8);
}
e = sgn*e;
it8->dnum = it8->dnum * xpow10(e);
}
}
// Parses a float number
// This can not call directly atof because it uses locale dependent
// parsing, while CCMX files always use . as decimal separator
static
cmsFloat64Number ParseFloatNumber(const char *Buffer)
{
cmsFloat64Number dnum = 0.0;
int sign = 1;
// keep safe
if (Buffer == NULL) return 0.0;
if (*Buffer == '-' || *Buffer == '+') {
sign = (*Buffer == '-') ? -1 : 1;
Buffer++;
}
while (*Buffer && isdigit((int)*Buffer)) {
dnum = dnum * 10.0 + (*Buffer - '0');
if (*Buffer) Buffer++;
}
if (*Buffer == '.') {
cmsFloat64Number frac = 0.0; // fraction
int prec = 0; // precision
if (*Buffer) Buffer++;
while (*Buffer && isdigit((int)*Buffer)) {
frac = frac * 10.0 + (*Buffer - '0');
prec++;
if (*Buffer) Buffer++;
}
dnum = dnum + (frac / xpow10(prec));
}
// Exponent, example 34.00E+20
if (*Buffer && toupper(*Buffer) == 'E') {
int e;
int sgn;
if (*Buffer) Buffer++;
sgn = 1;
if (*Buffer == '-') {
sgn = -1;
if (*Buffer) Buffer++;
}
else
if (*Buffer == '+') {
sgn = +1;
if (*Buffer) Buffer++;
}
e = 0;
while (*Buffer && isdigit((int)*Buffer)) {
cmsInt32Number digit = (*Buffer - '0');
if ((cmsFloat64Number)e * 10.0 + digit < (cmsFloat64Number)+2147483647.0)
e = e * 10 + digit;
if (*Buffer) Buffer++;
}
e = sgn*e;
dnum = dnum * xpow10(e);
}
return sign * dnum;
}
// Reads next symbol
static
void InSymbol(cmsIT8* it8)
{
CMSREGISTER char *idptr;
CMSREGISTER int k;
SYMBOL key;
int sng;
do {
while (isseparator(it8->ch))
NextCh(it8);
if (isfirstidchar(it8->ch)) { // Identifier
k = 0;
idptr = it8->id;
do {
if (++k < MAXID) *idptr++ = (char) it8->ch;
NextCh(it8);
} while (isidchar(it8->ch));
*idptr = '\0';
key = BinSrchKey(it8->id);
if (key == SUNDEFINED) it8->sy = SIDENT;
else it8->sy = key;
}
else // Is a number?
if (isdigit(it8->ch) || it8->ch == '.' || it8->ch == '-' || it8->ch == '+')
{
int sign = 1;
if (it8->ch == '-') {
sign = -1;
NextCh(it8);
}
it8->inum = 0;
it8->sy = SINUM;
if (it8->ch == '0') { // 0xnnnn (Hexa) or 0bnnnn (Binary)
NextCh(it8);
if (toupper(it8->ch) == 'X') {
int j;
NextCh(it8);
while (isxdigit(it8->ch))
{
it8->ch = toupper(it8->ch);
if (it8->ch >= 'A' && it8->ch <= 'F') j = it8->ch -'A'+10;
else j = it8->ch - '0';
if ((cmsFloat64Number) it8->inum * 16.0 + (cmsFloat64Number) j > (cmsFloat64Number)+2147483647.0)
{
SynError(it8, "Invalid hexadecimal number");
return;
}
it8->inum = it8->inum * 16 + j;
NextCh(it8);
}
return;
}
if (toupper(it8->ch) == 'B') { // Binary
int j;
NextCh(it8);
while (it8->ch == '0' || it8->ch == '1')
{
j = it8->ch - '0';
if ((cmsFloat64Number) it8->inum * 2.0 + j > (cmsFloat64Number)+2147483647.0)
{
SynError(it8, "Invalid binary number");
return;
}
it8->inum = it8->inum * 2 + j;
NextCh(it8);
}
return;
}
}
while (isdigit(it8->ch)) {
cmsInt32Number digit = (it8->ch - '0');
if ((cmsFloat64Number) it8->inum * 10.0 + (cmsFloat64Number) digit > (cmsFloat64Number) +2147483647.0) {
ReadReal(it8, it8->inum);
it8->sy = SDNUM;
it8->dnum *= sign;
return;
}
it8->inum = it8->inum * 10 + digit;
NextCh(it8);
}
if (it8->ch == '.') {
ReadReal(it8, it8->inum);
it8->sy = SDNUM;
it8->dnum *= sign;
return;
}
it8 -> inum *= sign;
// Special case. Numbers followed by letters are taken as identifiers
if (isidchar(it8 ->ch)) {
if (it8 ->sy == SINUM) {
snprintf(it8->id, 127, "%d", it8->inum);
}
else {
snprintf(it8->id, 127, it8 ->DoubleFormatter, it8->dnum);
}
k = (int) strlen(it8 ->id);
idptr = it8 ->id + k;
do {
if (++k < MAXID) *idptr++ = (char) it8->ch;
NextCh(it8);
} while (isidchar(it8->ch));
*idptr = '\0';
it8->sy = SIDENT;
}
return;
}
else
switch ((int) it8->ch) {
// EOF marker -- ignore it
case '\x1a':
NextCh(it8);
break;
// Eof stream markers
case 0:
case -1:
it8->sy = SEOF;
break;
// Next line
case '\r':
NextCh(it8);
if (it8 ->ch == '\n')
NextCh(it8);
it8->sy = SEOLN;
it8->lineno++;
break;
case '\n':
NextCh(it8);
it8->sy = SEOLN;
it8->lineno++;
break;
// Comment
case '#':
NextCh(it8);
while (it8->ch && it8->ch != '\n' && it8->ch != '\r')
NextCh(it8);
it8->sy = SCOMMENT;
break;
// String.
case '\'':
case '\"':
idptr = it8->str;
sng = it8->ch;
k = 0;
NextCh(it8);
while (k < (MAXSTR-1) && it8->ch != sng) {
if (it8->ch == '\n'|| it8->ch == '\r') k = MAXSTR+1;
else {
*idptr++ = (char) it8->ch;
NextCh(it8);
k++;
}
}
it8->sy = SSTRING;
*idptr = '\0';
NextCh(it8);
break;
default:
SynError(it8, "Unrecognized character: 0x%x", it8 ->ch);
return;
}
} while (it8->sy == SCOMMENT);
// Handle the include special token
if (it8 -> sy == SINCLUDE) {
FILECTX* FileNest;
if(it8 -> IncludeSP >= (MAXINCLUDE-1)) {
SynError(it8, "Too many recursion levels");
return;
}
InSymbol(it8);
if (!Check(it8, SSTRING, "Filename expected")) return;
FileNest = it8 -> FileStack[it8 -> IncludeSP + 1];
if(FileNest == NULL) {
FileNest = it8 ->FileStack[it8 -> IncludeSP + 1] = (FILECTX*)AllocChunk(it8, sizeof(FILECTX));
//if(FileNest == NULL)
// TODO: how to manage out-of-memory conditions?
}
if (BuildAbsolutePath(it8->str,
it8->FileStack[it8->IncludeSP]->FileName,
FileNest->FileName, cmsMAX_PATH-1) == FALSE) {
SynError(it8, "File path too long");
return;
}
FileNest->Stream = fopen(FileNest->FileName, "rt");
if (FileNest->Stream == NULL) {
SynError(it8, "File %s not found", FileNest->FileName);
return;
}
it8->IncludeSP++;
it8 ->ch = ' ';
InSymbol(it8);
}
}
// Checks end of line separator
static
cmsBool CheckEOLN(cmsIT8* it8)
{
if (!Check(it8, SEOLN, "Expected separator")) return FALSE;
while (it8 -> sy == SEOLN)
InSymbol(it8);
return TRUE;
}
// Skip a symbol
static
void Skip(cmsIT8* it8, SYMBOL sy)
{
if (it8->sy == sy && it8->sy != SEOF)
InSymbol(it8);
}
// Skip multiple EOLN
static
void SkipEOLN(cmsIT8* it8)
{