From: Rekhesh Mohan <reks@iiap.res.in>
Date: Thu, 8 Nov 2012 08:10:53 +0000 (+0530)
Subject: Merge branch 'testing' now v2.1
X-Git-Url: https://cads.iiap.res.in/gitview/?p=fits2jpeg.git;a=commitdiff_plain;h=ca5520b0c818f4ad57e2e57d557fc999f9dfe3c7;hp=bac717c6c0665b5754079fdcf79a79c797e6b62e

Merge branch 'testing' now v2.1

Conflicts:
	ChangeLog.txt
	configure.ac
	src/filesys.c
	src/fits2jpeg.c
	src/image.c
---

diff --git a/ChangeLog.txt b/ChangeLog.txt
index af372c5..353882a 100644
--- a/ChangeLog.txt
+++ b/ChangeLog.txt
@@ -29,9 +29,13 @@ version fits2jpeg-1.0
      A negative image can be generated using "-n" flag.
 
   4. New option to resize image
-     zoom or shrink output image using "-z <zoomfact>".
+     zoom or shrink output image by "-z <zoomfact>".
 
   5. New option to choose jpeg quality factor
-     You can choose the jpeg quality factor using "-q <quality>"
+     You can choose the jpeg quality factor by "-q <quality>"
      Quality factor was fixed at 100 in previous release.
 
+  6. New option to specify output directory for saving jpeg images
+     Output location can be specified by "-d </path/to/folder>"
+     If the target directory does not exist, the whole tree will be
+     created.
diff --git a/src/filesys.c b/src/filesys.c
index 873f891..8e40c52 100644
--- a/src/filesys.c
+++ b/src/filesys.c
@@ -24,7 +24,9 @@
 /*Header Definitions*/
 #include "fits2jpeg.h"
 
-/*---------------------------------------------------------------------------*/
+/*---------------------------------------------------------------------------*
+ * MAKE_DIR: Wrapper to mkdir() with some basic error checks
+ *---------------------------------------------------------------------------*/
 int make_dir(char * folder, mode_t mode)
 {
     struct stat st;
@@ -41,6 +43,10 @@ int make_dir(char * folder, mode_t mode)
     return status;
 }
 
+/*---------------------------------------------------------------------------*
+ * MAKE_TREE: moves through a directory path and creates directories and
+ *            subdirectories using make_dir(), top-down.
+ *---------------------------------------------------------------------------*/
 int make_tree(char * folder, mode_t mode)
 {
     char *pp;
@@ -65,6 +71,9 @@ int make_tree(char * folder, mode_t mode)
     return status;
 }
 
+/*---------------------------------------------------------------------------*
+ * STRDUP: This one is not a part of ANSI-strict, so we had to write one
+ *---------------------------------------------------------------------------*/
 char *strdup(const char *str)
 {
     int n = strlen(str) + 1;
diff --git a/src/image.c b/src/image.c
index 7f7a8e8..819158b 100644
--- a/src/image.c
+++ b/src/image.c
@@ -24,6 +24,9 @@
 /*Header Definitions*/
 #include "fits2jpeg.h"
 
+/*---------------------------------------------------------------------------*
+ * READ_FITS: To reads data from a fits image file.. (isn't that obvious?)
+ *---------------------------------------------------------------------------*/
 void read_fits(char * fits_file_name, long * xdim, long * ydim, float ** data)
 {
     fitsfile *fptr;
@@ -80,7 +83,7 @@ void scale_pixels(int scale, unsigned int npixels, float *data,
     scl_data = (datamax - datamin)/(float)JMAXVAL;
 
     /* we will end up with segfaults if scl_data = 0                        */
-    if (scl_data = 0) scl_data = 1;
+    if (scl_data == 0) scl_data = 1;
 
     for (i = 0; i < npixels; ++i)
         data[i] = (data[i] - datamin)/scl_data;