Add feature to export to svg-file

README.md

@@ -5,6 +5,7 @@
 This version has been patched for more functions.
 - key `n` : change size display ( bytes, MiB, GiB, TiB )
 - key `p` : print as postscript
+- key `v` : print as scalable-vector-graphic
 - option `-f` : set postscript file name
 
 This is a *works-for-me* release.

xdu.c

@@ -32,6 +32,12 @@
  * - 'worksforme' Makefile
  * - -Wall -Werror -Wextra -pedantic
  *
+ * added ability to print svg-files Fri Jun 08 2018 01:04:45 PM CEST
+ * Niclas Hofmann, niclas@molgen.mpg.de
+ * (new key v)
+ * - 'worksforme' Makefile
+ * - -Wall -Werror -Wextra -pedantic
+ *
  */
 
 #include <stdio.h>
@@ -922,6 +928,79 @@ void savetops(char *fname, int showsize)
 
 }
 
+void fprintsvgstart(FILE * fp)
+{
+    fprintf(fp, "<svg xmlns=\"http://www.w3.org/2000/svg\">\n");
+}
+
+void fprintsvgend(FILE * fp)
+{
+    fprintf(fp, "</svg>");
+}
+
+void fprintsvgnode(FILE * fp, struct rect rect)
+{
+    fprintf(fp, "    <rect x=\"%d\" y=\"%d\" width=\"%d\" height=\"%d\" stroke=\"black\" stroke-width=\"1px\" fill=\"white\"/>\n", rect.left, rect.top, rect.width, rect.height);
+}
+
+void fprintsvgnodetext(FILE * fp, int x, int y, long long size, char * name, int showsize)
+{
+    char buffer[1024], *text;
+
+    switch (showsize) {
+    case 1:
+        sprintf(buffer, "%s (%lldk)", name, size);
+        text = buffer;
+        break;
+    case 2:
+        sprintf(buffer, "%s (%.2fM)", name, (double)size/1024.0);
+        text = buffer;
+        break;
+    case 3:
+        sprintf(buffer, "%s (%.2fG)", name, (double)size/(1024.0*1024.0));
+        text = buffer;
+        break;
+    case 4:
+        sprintf(buffer, "%s (%.2fT)", name, (double)size/(1024.0*1024.0*1024.0));
+        text = buffer;
+        break;
+    default:
+        printf("arghhhhh");
+        break;
+    }
+
+    fprintf(fp, "    <text x=\"%d\" y=\"%d\" alignment-baseline=\"middle\" text-anchor=\"left\" style=\"font-size:12\">%s</text>\n", x, y, text);
+}
+
+void savesvgnode(FILE * fp, struct node * nodep, int showsize, int depth)
+{
+    struct node *np;
+
+    if (depth >= ncols)
+        return;
+    else
+        depth++;
+
+    for (np = nodep; np != NULL; np = np->peer) {
+        fprintsvgnode(fp, np->rect);
+        if (np->rect.height > 13)
+            fprintsvgnodetext(fp, np->rect.left+4, np->rect.top+np->rect.height/2+6, np->size, np->name, showsize);
+        savesvgnode(fp, np->child, showsize, depth);
+    }
+}
+
+void savetosvg(char *fname, int showsize)
+{
+    FILE *fp;
+
+    if ((fp = fopen(fname, "w")) != NULL) {
+        fprintsvgstart(fp);
+        savesvgnode(fp, topp, showsize, 0);
+        fprintsvgend(fp);
+        fclose(fp);
+    }
+}
+
 void uponechild(void)
 {
     struct node *np, *parent = NULL;

xwin.c

@@ -29,6 +29,7 @@
 #include <X11/Xaw/Label.h>
 
 #include <stdio.h>
+#include <unistd.h>             /* for access() */
 
 #ifndef X_NOT_STDC_ENV
 #include <stdlib.h>             /* for exit() */
@@ -46,6 +47,7 @@ extern int nodeinfo();
 extern int helpinfo();
 extern int ncols;
 extern void savetops(char *, int);
+extern void savetosvg(char*, int);
 
 /* EXPORTS: routines that this module exports outside */
 extern int xsetup();
@@ -66,6 +68,7 @@ static String fallback_resources[] = {
     "*help.height:		330",
     "*order:		first",
     "*psfile:		xdu_out.ps",
+    "*svgfile:      xdu_out",
     NULL
 };
 
@@ -78,6 +81,7 @@ typedef struct {
     int showsize;
     char *order;
     char *psfilename;
+    char *svgfilename;
 } res_data, *res_data_ptr;
 static res_data res;
 
@@ -100,6 +104,9 @@ static XtResource application_resources[] = {
     ,
     {"psfile", "PSFile", XtRString, sizeof(String),
      XtOffset(res_data_ptr, psfilename), XtRString, "xdu_out.ps"}
+    ,
+    {"svgfile", "SVGFile", XtRString, sizeof(String),
+     XtOffset(res_data_ptr, svgfilename), XtRString, "xdu_out"}
 };
 
 /* Command Line Options */
@@ -121,6 +128,7 @@ static void a_quit();
 static void a_reorder();
 static void a_size();
 static void a_saveps();
+static void a_savesvg();
 static void a_up();
 static void a_down();
 static void a_ncol();
@@ -136,6 +144,7 @@ static XtActionsRec actionsTable[] = {
     {"size", a_size},
     {"ncol", a_ncol},
     {"saveps", a_saveps},
+    {"savesvg", a_savesvg},
     {"uponechild", a_up},
     {"downonechild", a_down},
     {"info", a_info},
@@ -149,6 +158,7 @@ static char defaultTranslations[] = "\
 :<Key>/: reset()\n\
 <Key>S:	size()\n\
 <Key>P:	saveps()\n\
+<Key>V: savesvg()\n\
 <Key>I:	info()\n\
 <Key>H: help()\n\
 <Key>Help: help()\n\
@@ -255,6 +265,34 @@ static void a_saveps(Widget w, XEvent * e, String * params, Cardinal * num_param
     fprintf(stderr, "saved !\n");
 }
 
+static void a_savesvg(Widget w, XEvent * e, String * params, Cardinal * num_params)
+{
+    char *extension = ".svg";
+    int len = strlen(res.svgfilename) + 3 + strlen(extension) + 1;
+    char tmp[len];
+    char *fname;
+    int i;
+
+    UNUSED(w, e, params, num_params);
+
+    for (i = 0; i > -1; ++i) {
+        snprintf(tmp, len,"%s-%02d%s", res.svgfilename, i, extension);
+        if (access(tmp, F_OK) == -1) {
+            fname = tmp;
+            break;
+        }
+    }
+
+    if (i < 0) {
+        fprintf(stderr, "ERROR: there are too many xdu_output files!!!\n");
+        exit(1);
+    }
+
+    fprintf(stderr, "saving as scalable vector graphic to file: %s ..", fname);
+    savetosvg(fname, res.showsize);
+    fprintf(stderr, "saved !\n");
+}
+
 static void a_up(Widget w, XEvent * e, String * params, Cardinal * num_params)
 {
     UNUSED(w, e, params, num_params);
@@ -544,7 +582,8 @@ Keyboard Commands\n\
   q  quit (also Escape)\n\
 0-9  set number of columns (0=10)\n\
 \n\
-  p  print to file\n\
+  p  print to ps-file\n\
+  v  print to svg-file\n\
   u  go up one child\n\
   p  go down one child\n\
 \n\