/**
* ev_document_synctex_backward_search:
* @document: a #EvDocument
* @page_index: the target page
* @x: X coordinate
* @y: Y coordinate
*
* Peforms a Synctex backward search to obtain the TeX input file, line and
* (possibly) column corresponding to the position (@x,@y) (in 72dpi
* coordinates) in the @page of @document.
*
* Returns: A pointer to the EvSourceLink structure that holds the result. @NULL if synctex
* is not enabled for the document or no result is found.
* The EvSourceLink pointer should be freed with g_free after it is used.
*/
EvSourceLink *
ev_document_synctex_backward_search (EvDocument *document,
gint page_index,
gfloat x,
gfloat y)
{
EvSourceLink *result = NULL;
synctex_scanner_t scanner;
g_return_val_if_fail (EV_IS_DOCUMENT (document), NULL);
scanner = document->priv->synctex_scanner;
if (!scanner)
return NULL;
if (synctex_edit_query (scanner, page_index + 1, x, y) > 0) {
synctex_node_t node;
/* We assume that a backward search returns either zero or one result_node */
node = synctex_next_result (scanner);
if (node != NULL) {
const gchar *filename;
filename = synctex_scanner_get_name (scanner, synctex_node_tag (node));
if (filename) {
result = ev_source_link_new (filename,
synctex_node_line (node),
synctex_node_column (node));
}
}
}
return result;
}
void SynctexHandler::synctexClick(const QPointF &pagePos, int pageNumber)
{
if (!m_synctexScanner)
return;
if (synctex_edit_query(m_synctexScanner, pageNumber + 1, pagePos.x(), pagePos.y()) > 0)
{
synctex_node_t synctexNode;
while ((synctexNode = synctex_next_result(m_synctexScanner)) != 0)
{
const QString texFileName = QString::fromUtf8(synctex_scanner_get_name(m_synctexScanner, synctex_node_tag(synctexNode)));
const QDir currentDir(QFileInfo(m_fileName).canonicalPath());
Q_EMIT openTexDocument(QFileInfo(currentDir, texFileName).canonicalFilePath(), synctex_node_line(synctexNode));
}
}
}
bool
synctex_get_input_line_column(const char* filename, unsigned int page, int x, int y,
char** input_file, unsigned int* line, unsigned int* column)
{
if (filename == NULL) {
return false;
}
synctex_scanner_t scanner = synctex_scanner_new_with_output_file(filename, NULL, 1);
if (scanner == NULL) {
girara_debug("Failed to create synctex scanner.");
return false;
}
synctex_scanner_t temp = synctex_scanner_parse(scanner);
if (temp == NULL) {
girara_debug("Failed to parse synctex file.");
synctex_scanner_free(scanner);
return false;
}
bool ret = false;
if (synctex_edit_query(scanner, page + 1u, x, y) > 0) {
/* Assume that a backward search returns at most one result. */
synctex_node_t node = synctex_next_result(scanner);
if (node != NULL) {
if (input_file != NULL) {
*input_file = g_strdup(synctex_scanner_get_name(scanner, synctex_node_tag(node)));
}
if (line != NULL) {
*line = synctex_node_line(node);
}
if (column != NULL) {
*column = synctex_node_column(node);
}
ret = true;
}
}
synctex_scanner_free(scanner);
return ret;
}
int SyncTex::DocToSource(UINT pageNo, PointI pt, ScopedMem<WCHAR>& filename, UINT *line, UINT *col)
{
if (IsIndexDiscarded()) {
if (RebuildIndex() != PDFSYNCERR_SUCCESS)
return PDFSYNCERR_SYNCFILE_CANNOT_BE_OPENED;
}
CrashIf(!this->scanner);
// Coverity: at this point, this->scanner->flags.has_parsed == 1 and thus
// synctex_scanner_parse never gets the chance to freeing the scanner
if (synctex_edit_query(this->scanner, pageNo, (float)pt.x, (float)pt.y) <= 0)
return PDFSYNCERR_NO_SYNC_AT_LOCATION;
synctex_node_t node = synctex_next_result(this->scanner);
if (!node)
return PDFSYNCERR_NO_SYNC_AT_LOCATION;
const char *name = synctex_scanner_get_name(this->scanner, synctex_node_tag(node));
if (!name)
return PDFSYNCERR_UNKNOWN_SOURCEFILE;
bool isUtf8 = true;
filename.Set(str::conv::FromUtf8(name));
TryAgainAnsi:
if (!filename)
return PDFSYNCERR_OUTOFMEMORY;
// undecorate the filepath: replace * by space and / by \
str::TransChars(filename, L"*/", L" \\");
// Convert the source filepath to an absolute path
if (PathIsRelative(filename))
filename.Set(PrependDir(filename));
// recent SyncTeX versions encode in UTF-8 instead of ANSI
if (isUtf8 && !file::Exists(filename)) {
isUtf8 = false;
filename.Set(str::conv::FromAnsi(name));
goto TryAgainAnsi;
}
*line = synctex_node_line(node);
*col = synctex_node_column(node);
return PDFSYNCERR_SUCCESS;
}
int synctex_edit_proceed(synctex_edit_params_t * Ps) {
synctex_scanner_t scanner = NULL;
#if SYNCTEX_DEBUG
printf("page:%i\n",Ps->page);
printf("x:%f\n",Ps->x);
printf("y:%f\n",Ps->y);
printf("almost output:%s\n",Ps->output);
printf("editor:%s\n",Ps->editor);
printf("offset:%i\n",Ps->offset);
printf("context:%s\n",Ps->context);
printf("cwd:%s\n",getcwd(NULL,0));
#endif
scanner = synctex_scanner_new_with_output_file(Ps->output,Ps->directory,1);
if(NULL == scanner) {
synctex_help_edit("No SyncTeX available for %s",Ps->output);
return -1;
}
if(synctex_edit_query(scanner,Ps->page,Ps->x,Ps->y)) {
synctex_node_t node = NULL;
const char * input = NULL;
if(NULL != (node = synctex_next_result(scanner))
&& NULL != (input = synctex_scanner_get_name(scanner,synctex_node_tag(node)))) {
/* filtering the command */
if(Ps->editor && strlen(Ps->editor)) {
size_t size = 0;
char * where = NULL;
char * buffer = NULL;
char * buffer_cur = NULL;
int printed;
int status;
size = strlen(Ps->editor)+3*sizeof(int)+3*SYNCTEX_STR_SIZE;
buffer = malloc(size+1);
if(NULL == buffer) {
printf("SyncTeX ERROR: No memory available\n");
return -1;
}
buffer[size]='\0';
/* Replace %{ by &{, then remove all unescaped '%'*/
while((where = strstr(Ps->editor,"%{")) != NULL) {
*where = '&';
}
where = Ps->editor;
while(where &&(where = strstr(where,"%"))) {
if(strlen(++where)) {
if(*where == '%') {
++where;
} else {
*(where-1)='&';
}
}
}
buffer_cur = buffer;
/* find the next occurrence of a format key */
where = Ps->editor;
while(Ps->editor && (where = strstr(Ps->editor,"&{"))) {
#define TEST(KEY,FORMAT,WHAT)\
if(!strncmp(where,KEY,strlen(KEY))) {\
printed = where-Ps->editor;\
if(buffer_cur != memcpy(buffer_cur,Ps->editor,(size_t)printed)) {\
synctex_help_edit("Memory copy problem");\
free(buffer);\
return -1;\
}\
buffer_cur += printed;size-=printed;\
printed = snprintf(buffer_cur,size,FORMAT,WHAT);\
if((unsigned)printed >= (unsigned)size) {\
synctex_help_edit("Snprintf problem");\
free(buffer);\
return -1;\
}\
buffer_cur += printed;size-=printed;\
*buffer_cur='\0';\
Ps->editor = where+strlen(KEY);\
continue;\
}
TEST("&{output}", "%s",Ps->output);
TEST("&{input}", "%s",input);
TEST("&{line}", "%i",synctex_node_line(node));
TEST("&{column}", "%i",-1);
TEST("&{offset}", "%i",Ps->offset);
TEST("&{context}","%s",Ps->context);
#undef TEST
break;
}
/* copy the rest of editor into the buffer */
if(buffer_cur != memcpy(buffer_cur,Ps->editor,strlen(Ps->editor))) {
fputs("! synctex_edit: Memory copy problem",stderr);
free(buffer);
return -1;
}\
printf("SyncTeX: Executing\n%s\n",buffer);
status = system(buffer);
free(buffer);
buffer = NULL;
return status;
} else {
/* just print out the results */
puts("SyncTeX result begin");
do {
printf( "Output:%s\n"
"Input:%s\n"
"Line:%i\n"
"Column:%i\n"
"Offset:%i\n"
"Context:%s\n",
Ps->output,
input,
synctex_node_line(node),
synctex_node_column(node),
Ps->offset,
(Ps->context?Ps->context:""));
} while((node = synctex_next_result(scanner)) != NULL);
puts("SyncTeX result end");
}
}
}
return 0;
}
void
synctex_edit(zathura_t* zathura, zathura_page_t* page, int x, int y)
{
if (zathura == NULL || page == NULL || zathura->synctex.editor == NULL) {
return;
}
zathura_document_t* document = zathura_page_get_document(page);
if (document == NULL) {
return;
}
const char *filename = zathura_document_get_path(document);
if (filename == NULL) {
return;
}
synctex_scanner_t scanner = synctex_scanner_new_with_output_file(filename, NULL, 1);
if (scanner == NULL) {
girara_debug("Failed to create synctex scanner.");
return;
}
synctex_scanner_t temp = synctex_scanner_parse(scanner);
if (temp == NULL) {
girara_debug("Failed to parse synctex file.");
synctex_scanner_free(scanner);
return;
}
if (synctex_edit_query(scanner, zathura_page_get_index(page) + 1, x, y) > 0) {
/* Assume that a backward search returns either at most one result. */
synctex_node_t node = synctex_next_result(scanner);
if (node != NULL) {
const char* input_file = synctex_scanner_get_name(scanner, synctex_node_tag(node));
const int line = synctex_node_line(node);
const int column = synctex_node_column (node);
char* linestr = g_strdup_printf("%d", line);
char* columnstr = g_strdup_printf("%d", column);
gchar** argv = NULL;
gint argc = 0;
if (g_shell_parse_argv(zathura->synctex.editor, &argc, &argv, NULL) == TRUE) {
for (gint i = 0; i != argc; ++i) {
char* temp = girara_replace_substring(argv[i], "%{line}", linestr);
g_free(argv[i]);
argv[i] = temp;
temp = girara_replace_substring(argv[i], "%{column}", columnstr);
g_free(argv[i]);
argv[i] = temp;
temp = girara_replace_substring(argv[i], "%{input}", input_file);
g_free(argv[i]);
argv[i] = temp;
}
g_spawn_async(NULL, argv, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, NULL);
g_strfreev(argv);
}
g_free(linestr);
g_free(columnstr);
}
}
synctex_scanner_free(scanner);
}