From 9f42b813e77d6ee086291f11eb2b50c5ec2db2be Mon Sep 17 00:00:00 2001
From: tth <sigfood@dinorama.fr>
Date: Wed, 11 Sep 2019 07:43:08 +0200
Subject: [PATCH] adding a new tool : fimgops

---
 .gitignore      |  1 +
 tools/Makefile  |  5 ++-
 tools/fimgops.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 86 insertions(+), 1 deletion(-)
 create mode 100644 tools/fimgops.c

diff --git a/.gitignore b/.gitignore
index ee64b42c..62cfed1a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,3 +36,4 @@ tools/png2fimg
 tools/addtga2fimg
 tools/addpnm2fimg
 tools/cumulfimgs
+tools/fimgops
diff --git a/tools/Makefile b/tools/Makefile
index f82872ac..9b624e7c 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -9,7 +9,7 @@ DEPS = ../floatimg.h  ../libfloatimg.a Makefile
 # 			----------
 
 all:	fimg2pnm mkfimg png2fimg fimgstats fimg2png	\
-	addpnm2fimg cumulfimgs
+	addpnm2fimg cumulfimgs fimgops
 
 fimgstats:	fimgstats.c $(DEPS)
 	gcc $(COPT) $< ../libfloatimg.a -o $@ 
@@ -20,6 +20,9 @@ cumulfimgs:	cumulfimgs.c $(DEPS)
 mkfimg:		mkfimg.c  $(DEPS)
 	gcc $(COPT) $< ../libfloatimg.a -o $@ 
 
+fimgops:		fimgops.c  $(DEPS)
+	gcc $(COPT) $< ../libfloatimg.a -o $@ 
+
 fimg2pnm:	fimg2pnm.c  $(DEPS)
 	gcc $(COPT) $< ../libfloatimg.a -o $@ 
 
diff --git a/tools/fimgops.c b/tools/fimgops.c
new file mode 100644
index 00000000..bab7786d
--- /dev/null
+++ b/tools/fimgops.c
@@ -0,0 +1,81 @@
+#include  <stdio.h>
+#include  <string.h>
+#include  <stdlib.h>
+#include  <unistd.h>
+
+#include  "../floatimg.h"
+
+int		verbosity;
+
+/* --------------------------------------------------------------------- */
+#define		OP_ADD		1
+#define		OP_MUL		2
+typedef struct {
+	int	code;
+	char	*op;
+	} Opcode;
+
+Opcode opcodes[] = {
+	{ OP_ADD,		"add"		},
+	{ OP_MUL,		"mul"		},
+	{ 0,			NULL		}
+	};
+static void pr_opcodes(void)
+{
+Opcode *optr;
+puts("operators:");
+for (optr = opcodes; optr->code; optr++) {
+	printf("\t%-20s %d\n", optr->op, optr->code); 
+	} 
+}
+static int look_opcodes(char *txt)
+{
+Opcode *optr;
+
+for (optr = opcodes; optr->code; optr++) {
+	if (!strcmp(txt, optr->op)) {
+		printf("found %s as %d\n", optr->op, optr->code);
+		return optr->code;
+		}
+	} 
+return -1;
+}
+/* --------------------------------------------------------------------- */
+static void help(int lj)
+{
+
+puts("usage:\n\tfimgops [options] A.fimg B.fimg operator D.fimg");
+pr_opcodes();
+if (verbosity) fimg_print_version(1);
+exit(0);
+}
+/* --------------------------------------------------------------------- */
+int main(int argc, char *argv[])
+{
+int		foo, opt;
+float		fvalue;
+
+FloatImg	fimg;
+
+while ((opt = getopt(argc, argv, "hk:v")) != -1) {
+	switch(opt) {
+		case 'h':	help(0);			break;
+		case 'k':	fvalue = atof(optarg);		break;
+		case 'v':	verbosity++;			break;
+		}
+	}
+
+#if DEBUG_LEVEL
+fprintf(stderr, "argc %d optind %d\n", argc, optind);
+for (foo=0; foo<argc; foo++)
+	fprintf(stderr, "%3d  %s\n", foo, argv[foo]);
+#endif
+
+if (4 != argc-optind) {
+	fprintf(stderr, "%s need some arguments...\n", argv[0]);
+	exit(1);
+	}
+
+return 0;
+}
+/* --------------------------------------------------------------------- */