initial commit

1 files changed, 117 insertions, 0 deletions

diff --git a/blob2c.c b/blob2c.c
new file mode 100644
index 0000000..779b79f
--- /dev/null
+++ b/blob2c.c
@@ -0,0 +1,117 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <string.h>
+#include <errno.h>
+#include <ctype.h>
+
+/* since we're emitting C source, the comments containing the
+	ASCII dump better not contain C comment markers! */
+void fixasc(char *asc, int len) {
+	int j;
+
+	for(j=0; j<(len-1); j++) {
+		/* slash-star or slash-slash become slash-dot */
+		if(asc[j] == '/' && (asc[j+1] == '*' || asc[j+1] == '/'))
+			asc[j+1] = '.';
+		/* star-slash becomes dot-slash */
+		else if(asc[j] == '*' && asc[j+1] == '/')
+			asc[j] = '.';
+	}
+}
+
+int main(int argc, char **argv) {
+	int i, j, count = 0;
+	char *p, asc[9];
+	FILE *in;
+
+	if(argc != 2) {
+		fprintf(stderr,
+				"#error usage: %s blobfile >blobfile.c 2>blobfile.h\n", argv[0]);
+		exit(1);
+	}
+
+	if( !(in = fopen(argv[1], "rb")) ) {
+		fprintf(stderr, "/* %s: %s */\n", argv[1], strerror(errno));
+		exit(1);
+	}
+
+	printf("/* C source created by blob2c from input file %s */\n\n", argv[1]);
+	fprintf(stderr,
+			"/* C header created by blob2c from input file %s */\n\n", argv[1]);
+
+	for(p = argv[1]; *p; p++)
+		if(!isalnum(*p)) *p = '_';
+
+	fprintf(stderr,
+			"#ifndef %s_H\n"
+			"#define %s_H\n\n",
+			argv[1], argv[1]);
+
+	/* start array definition */
+	printf("unsigned char %s[] = {", argv[1]);
+
+	asc[8] = '\0';
+
+	/* read/process each input byte in loop, until EOF */
+	while( (i = getc(in)) != EOF ) {
+		if(count) putchar(',');
+
+		if(count % 8 == 0) {
+			if(count) {
+				/* fix & print ASCII dump */
+				fixasc(asc, 8);
+				printf(" /* %s */", asc);
+			}
+
+			/* start next line */
+			printf("\n\t/* %6d */  ", count);
+		}
+
+		/* store this byte of ASCII dump */
+		asc[count % 8] = isprint(i) ? i : '.';
+
+		/* print this byte of hex data */
+		printf("0x%02x", i);
+
+		count++;
+	}
+
+	/* fix ASCII dump for last line */
+	i = count % 8;
+	if(!i) i = 8;
+	fixasc(asc, i);
+	asc[i] = '\0';
+
+	/* line it up with the previous lines */
+	j = (8 - i) * 5;
+	for(i=0; i<j; i++)
+		putchar(' ');
+
+	/* print it */
+	printf("  /* %s */", asc);
+
+	/* end of array definition */
+	printf("\n}; /* %s */\n\n", argv[1]);
+
+	/* array_len definition */
+	printf("int %s_len = %d;\n", argv[1], count);
+
+	/* check for read errors */
+	i = 0;
+	if(ferror(in)) {
+		fprintf(stderr, "#error %s: %s\n", argv[1], strerror(errno));
+		i = 1;
+	}
+
+	fclose(in);
+
+	/* extern declarations to stderr */
+	fprintf(stderr,
+			"extern unsigned char %s[];\nextern int %s_len;\n",
+			argv[1], argv[1]);
+
+	fprintf(stderr, "\n#endif  /* %s_H */\n", argv[1]);
+
+	return i;
+}