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authorDan Sinclair <dsinclair@chromium.org>2015-10-28 14:18:26 -0400
committerDan Sinclair <dsinclair@chromium.org>2015-10-28 14:18:26 -0400
commit5a4af03849c8389872cd6908222df4c4e7f99ca8 (patch)
treec98a4f7e02fcf477e2eede92877adb4a7689e734 /core/src
parentdd4cd523ef4546b43d68e8ca6ec0a97fbe8954e9 (diff)
downloadpdfium-5a4af03849c8389872cd6908222df4c4e7f99ca8.tar.xz
Add constants for the path operators.
This CL adds constants for some of the path operators to make it more obvious what is being checked. R=thestig@chromium.org Review URL: https://codereview.chromium.org/1413783009 .
Diffstat (limited to 'core/src')
-rw-r--r--core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp38
1 files changed, 27 insertions, 11 deletions
diff --git a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
index 1e435ee958..0e059f3fc5 100644
--- a/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
+++ b/core/src/fpdfapi/fpdf_page/fpdf_page_parser_old.cpp
@@ -10,6 +10,18 @@
#include "pageint.h"
#include <limits.h>
+namespace {
+
+const char kPathOperatorSubpath = 'm';
+const char kPathOperatorLine = 'l';
+const char kPathOperatorCubicBezier1 = 'c';
+const char kPathOperatorCubicBezier2 = 'v';
+const char kPathOperatorCubicBezier3 = 'y';
+const char kPathOperatorClosePath = 'h';
+const char kPathOperatorRectangle[] = "re";
+
+} // namespace
+
class CPDF_StreamParserAutoClearer {
public:
CPDF_StreamParserAutoClearer(CPDF_StreamParser** scoped_variable,
@@ -150,33 +162,33 @@ void CPDF_StreamContentParser::ParsePathObject() {
int len = m_pSyntax->GetWordSize();
if (len == 1) {
switch (m_pSyntax->GetWordBuf()[0]) {
- case 'm':
+ case kPathOperatorSubpath:
AddPathPoint(params[0], params[1], FXPT_MOVETO);
nParams = 0;
break;
- case 'l':
+ case kPathOperatorLine:
AddPathPoint(params[0], params[1], FXPT_LINETO);
nParams = 0;
break;
- case 'c':
+ case kPathOperatorCubicBezier1:
AddPathPoint(params[0], params[1], FXPT_BEZIERTO);
AddPathPoint(params[2], params[3], FXPT_BEZIERTO);
AddPathPoint(params[4], params[5], FXPT_BEZIERTO);
nParams = 0;
break;
- case 'v':
+ case kPathOperatorCubicBezier2:
AddPathPoint(m_PathCurrentX, m_PathCurrentY, FXPT_BEZIERTO);
AddPathPoint(params[0], params[1], FXPT_BEZIERTO);
AddPathPoint(params[2], params[3], FXPT_BEZIERTO);
nParams = 0;
break;
- case 'y':
+ case kPathOperatorCubicBezier3:
AddPathPoint(params[0], params[1], FXPT_BEZIERTO);
AddPathPoint(params[2], params[3], FXPT_BEZIERTO);
AddPathPoint(params[2], params[3], FXPT_BEZIERTO);
nParams = 0;
break;
- case 'h':
+ case kPathOperatorClosePath:
Handle_ClosePath();
nParams = 0;
break;
@@ -185,8 +197,8 @@ void CPDF_StreamContentParser::ParsePathObject() {
break;
}
} else if (len == 2) {
- if (m_pSyntax->GetWordBuf()[0] == 'r' &&
- m_pSyntax->GetWordBuf()[1] == 'e') {
+ if (m_pSyntax->GetWordBuf()[0] == kPathOperatorRectangle[0] &&
+ m_pSyntax->GetWordBuf()[1] == kPathOperatorRectangle[1]) {
AddPathRect(params[0], params[1], params[2], params[3]);
nParams = 0;
} else {
@@ -530,6 +542,7 @@ CPDF_StreamParser::SyntaxType CPDF_StreamParser::ParseNextElement() {
}
return Keyword;
}
+
void CPDF_StreamParser::SkipPathObject() {
FX_DWORD command_startpos = m_Pos;
if (!PositionIsInBounds())
@@ -573,13 +586,16 @@ void CPDF_StreamParser::SkipPathObject() {
if (m_Pos - op_startpos == 2) {
int op = m_pBuf[op_startpos];
- // TODO(dsinclair): Can these be turned into named constants?
- if (op == 'm' || op == 'l' || op == 'c' || op == 'v' || op == 'y') {
+ if (op == kPathOperatorSubpath || op == kPathOperatorLine ||
+ op == kPathOperatorCubicBezier1 ||
+ op == kPathOperatorCubicBezier2 ||
+ op == kPathOperatorCubicBezier3) {
command_startpos = m_Pos;
break;
}
} else if (m_Pos - op_startpos == 3) {
- if (m_pBuf[op_startpos] == 'r' && m_pBuf[op_startpos + 1] == 'e') {
+ if (m_pBuf[op_startpos] == kPathOperatorRectangle[0] &&
+ m_pBuf[op_startpos + 1] == kPathOperatorRectangle[1]) {
command_startpos = m_Pos;
break;
}