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TessPDFRenderer: Improve robustness of API (issue #1804)

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Signed-off-by: Stefan Weil <sw@weilnetz.de>
This commit is contained in:
Stefan Weil 2018-08-01 09:11:04 +02:00
parent 9ce4d05188
commit eb69dd0201
2 changed files with 5 additions and 4 deletions
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6
src/api/pdfrenderer.cpp
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@ -182,9 +182,9 @@ static const int kMaxBytesPerCodepoint = 20;
TessPDFRenderer::TessPDFRenderer(const char *outputbase, const char *datadir, TessPDFRenderer::TessPDFRenderer(const char *outputbase, const char *datadir,
bool textonly) bool textonly)
: TessResultRenderer(outputbase, "pdf") { : TessResultRenderer(outputbase, "pdf"),
datadir_(datadir) {
obj_ = 0; obj_ = 0;
datadir_ = datadir;
textonly_ = textonly; textonly_ = textonly;
offsets_.push_back(0); offsets_.push_back(0);
} }
@ -654,7 +654,7 @@ bool TessPDFRenderer::BeginDocumentHandler() {
if (n >= sizeof(buf)) return false; if (n >= sizeof(buf)) return false;
AppendPDFObject(buf); AppendPDFObject(buf);
n = snprintf(buf, sizeof(buf), "%s/pdf.ttf", datadir_); n = snprintf(buf, sizeof(buf), "%s/pdf.ttf", datadir_.c_str());
if (n >= sizeof(buf)) return false; if (n >= sizeof(buf)) return false;
FILE *fp = fopen(buf, "rb"); FILE *fp = fopen(buf, "rb");
if (!fp) { if (!fp) {

3
src/api/renderer.h
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@ -21,6 +21,7 @@
// To avoid collision with other typenames include the ABSOLUTE MINIMUM // To avoid collision with other typenames include the ABSOLUTE MINIMUM
// complexity of includes here. Use forward declarations wherever possible // complexity of includes here. Use forward declarations wherever possible
// and hide includes of complex types in baseapi.cpp. // and hide includes of complex types in baseapi.cpp.
#include <string> // for std::string
#include "genericvector.h" #include "genericvector.h"
#include "platform.h" #include "platform.h"
@ -202,7 +203,7 @@ class TESS_API TessPDFRenderer : public TessResultRenderer {
long int obj_; // counter for PDF objects long int obj_; // counter for PDF objects
GenericVector<long int> offsets_; // offset of every PDF object in bytes GenericVector<long int> offsets_; // offset of every PDF object in bytes
GenericVector<long int> pages_; // object number for every /Page object GenericVector<long int> pages_; // object number for every /Page object
const char *datadir_; // where to find the custom font std::string datadir_; // where to find the custom font
bool textonly_; // skip images if set bool textonly_; // skip images if set
// Bookkeeping only. DIY = Do It Yourself. // Bookkeeping only. DIY = Do It Yourself.
void AppendPDFObjectDIY(size_t objectsize); void AppendPDFObjectDIY(size_t objectsize);