From: Simone Piccardi <piccardi@gnulinux.it>
Date: Fri, 28 Jun 2002 17:59:24 +0000 (+0000)
Subject: Versione funzionante di un CGI che produce PNG di codici a barre.
X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=commitdiff_plain;h=da8455a295d5e2e237711cd930b7052f1b30ea38;ds=sidebyside

Versione funzionante di un CGI che produce PNG di codici a barre.
---

diff --git a/sources/BarCode.c b/sources/BarCode.c
index 44a08da..fbea4ae 100644
--- a/sources/BarCode.c
+++ b/sources/BarCode.c
@@ -29,7 +29,7 @@
  * http://localhost/cgi-bin/barcode?string
  * where string is the code to be converted
  *
- * $Id: BarCode.c,v 1.3 2002/06/23 22:03:28 piccardi Exp $ 
+ * $Id: BarCode.c,v 1.4 2002/06/28 17:59:24 piccardi Exp $ 
  *
  ****************************************************************/
 /* 
@@ -57,23 +57,32 @@ int main(int argc, char *argv[], char *envp[])
 /*
  * Variables definition	 
  */
-    FILE *file1, *file2, *file3;
-    char content[]="Content-type: image/jpeg\n\n";
-    /* 
-     * Begin
-     */
+    FILE *pipe[4];
+    FILE *pipein;
+    char *cmd_string[4]={
+	"pnmtopng",
+	"pnmmargin -white 10",
+	"pnmcrop",
+	"gs -sDEVICE=ppmraw -sOutputFile=- -sNOPAUSE -q - -c showpage -c quit"
+    };	
+    char content[]="Content-type: image/png\n\n";
+    int i;
     /* write mime-type to stout */ 
     write(STDOUT_FILENO, content, strlen(content));
-    /* convert PDF to JPEG */
-    file1 = popen("gs -q -sDEVICE=jpeg -sOutputFile=- -", "w");
-    /* convert EPS to PDF*/
-    dup2(fileno(file1), STDOUT_FILENO);  /* set epstopdf stdout to file1 */
-    file2 = popen("epstopdf --filter", "w");
-//    file2 = popen("eps2eps", "w");
-    /* create barcode */
-    dup2(fileno(file2), STDOUT_FILENO);  /* set barcode stdout to file2 */
-    file3 = popen("barcode -E", "w");     
-    write(fileno(file3), argv[1], strlen(argv[1]));
+    
+    /* execute chain of command */
+    for (i=0; i<4; i++) {
+	pipe[i] = popen(cmd_string[i], "w");
+	dup2(fileno(pipe[i]), STDOUT_FILENO); 
+    }
+    /* create barcode (in PS) */
+    pipein = popen("barcode", "w");
+    /* send barcode string */
+    write(fileno(pipein), argv[1], strlen(argv[1]));
+    /* close all pipes */
+    for (i=4; i==0; i--) {
+	pclose((pipe[i]));
+    }
     exit(0);
 }
 /*