From 7ae80bff9ee04793a1c0d59e538da7802f81a43d Mon Sep 17 00:00:00 2001
From: Randy <randy408@protonmail.com>
Date: Tue, 18 Feb 2020 21:33:37 +0000
Subject: Refactor code so that psscan() can accept a FILE*, this will enable
 parsing from fmemopen()'d buffers. I figured this should be merged separately
 before spectre_document_load_from_data() is added.

---
 libspectre/ps.c               | 11 +----------
 libspectre/ps.h               |  1 +
 libspectre/spectre-document.c | 14 +++++++++++++-
 3 files changed, 15 insertions(+), 11 deletions(-)

(limited to 'libspectre')

diff --git a/libspectre/ps.c b/libspectre/ps.c
index 18c3c30..e6b508c 100644
--- a/libspectre/ps.c
+++ b/libspectre/ps.c
@@ -368,10 +368,9 @@ static Boolean scan_boundingbox(int *bb, const char *line)
 /*###########################################################*/
 
 struct document *
-psscan(const char *filename, int scanstyle)
+psscan(FILE *file, const char *filename, int scanstyle)
 {
     struct document *doc;
-    FILE *file;
     int bb_set = NONE;
     int pages_set = NONE;
     int page_order_set = NONE;
@@ -424,11 +423,6 @@ psscan(const char *filename, int scanstyle)
       return(NULL);
     }
 
-    file = fopen (filename, "rb");
-    if (!file) {
-	    return NULL;
-    }
-
     fd = ps_io_init(file);
     
     /* rjl: check for DOS EPS files and almost DSC files that start with ^D */
@@ -437,7 +431,6 @@ psscan(const char *filename, int scanstyle)
 	fprintf(stderr, "Warning: empty file.\n");
         ENDMESSAGE(psscan)
         ps_io_exit(fd);
-	fclose (file);
 	return(NULL);
     }
 
@@ -451,7 +444,6 @@ psscan(const char *filename, int scanstyle)
 	    fprintf(stderr, "psscan error: input files seems to be a PJL file.\n");
 	    ENDMESSAGE(psscan)
 	    ps_io_exit(fd);
-	    fclose (file);
 	    return (NULL);
 	}
     }
@@ -1234,7 +1226,6 @@ continuepage:
 #endif
     ENDMESSAGE(psscan)
     ps_io_exit(fd);
-    fclose (file);
     return doc;
 }
 
diff --git a/libspectre/ps.h b/libspectre/ps.h
index e063668..851c55c 100644
--- a/libspectre/ps.h
+++ b/libspectre/ps.h
@@ -153,6 +153,7 @@ struct page {
 
 Document				psscan (
 #if NeedFunctionPrototypes
+    FILE *,
     const char *,
     int     /* scanstyle */
 #endif
diff --git a/libspectre/spectre-document.c b/libspectre/spectre-document.c
index 6dde48b..c08c3c2 100644
--- a/libspectre/spectre-document.c
+++ b/libspectre/spectre-document.c
@@ -54,6 +54,7 @@ void
 spectre_document_load (SpectreDocument *document,
 		       const char      *filename)
 {
+	FILE *file;
 	_spectre_return_if_fail (document != NULL);
 	_spectre_return_if_fail (filename != NULL);
 	
@@ -66,10 +67,17 @@ spectre_document_load (SpectreDocument *document,
 		psdocdestroy (document->doc);
 		document->doc = NULL;
 	}
+
+	file = fopen (filename, "rb");
+	if (!file) {
+		document->status = SPECTRE_STATUS_LOAD_ERROR;
+		return;
+	}
 	
-	document->doc = psscan (filename, SCANSTYLE_NORMAL);
+	document->doc = psscan (file, filename, SCANSTYLE_NORMAL);
 	if (!document->doc) {
 		document->status = SPECTRE_STATUS_LOAD_ERROR;
+		fclose(file);
 		return;
 	}
 
@@ -77,6 +85,7 @@ spectre_document_load (SpectreDocument *document,
 		document->status = SPECTRE_STATUS_LOAD_ERROR;
 		psdocdestroy (document->doc);
 		document->doc = NULL;
+		fclose(file);
 		
 		return;
 	} else if (document->doc->numpages == 0 && !document->doc->format) {
@@ -91,6 +100,7 @@ spectre_document_load (SpectreDocument *document,
 			document->status = SPECTRE_STATUS_LOAD_ERROR;
 			psdocdestroy (document->doc);
 			document->doc = NULL;
+			fclose(file);
 
 			return;
 		}
@@ -101,6 +111,8 @@ spectre_document_load (SpectreDocument *document,
 
 	if (document->status != SPECTRE_STATUS_SUCCESS)
 		document->status = SPECTRE_STATUS_SUCCESS;
+
+	fclose(file);
 }
 
 void
-- 
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