--- /dev/null
+/* ========================================================================
+ * Copyright 1988-2006 University of Washington
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *
+ * ========================================================================
+ */
+
+/*
+ * Program: unANSIify
+ *
+ * Author: Mark Crispin
+ * Networks and Distributed Computing
+ * Computing & Communications
+ * University of Washington
+ * 4545 15th Ave NE
+ * Seattle, WA 98105-4527
+ * Internet: MRC@CAC.Washington.EDU
+ *
+ * Date: 1 June 1995
+ * Last Edited: 30 August 2006
+ */
+
+
+/* This program is designed to make traditional C sources out of my source
+ * files which use ANSI syntax. This program depends heavily upon knowledge
+ * of the way I write code, and is not a general purpose tool. I hope that
+ * someday someone will provide a general purpose tool...
+ */
+\f
+#include <stdio.h>
+
+#define LINELENGTH 1000
+
+
+/* Find first non-whitespace
+ * Accepts: string
+ * Returns: 0 if no non-whitespace found, or pointer to non-whitespace
+ */
+
+char *fndnws (s)
+ char *s;
+{
+ while ((*s == ' ') || (*s == '\t'))
+ if ((*s++ == '\n') || !*s) return (char *) 0;
+ return s;
+}
+
+
+/* Find first whitespace
+ * Accepts: string
+ * Returns: 0 if no whitespace found, or pointer to whitespace
+ */
+
+char *fndws (s)
+ char *s;
+{
+ while ((*s != ' ') && (*s != '\t'))
+ if ((*s++ == '\n') || !*s) return (char *) 0;
+ return s;
+}
+
+
+/* Find end of commend
+ * Accepts: string
+ * Returns: -1 if end of comment found, else 0
+ */
+
+int fndcmt (s)
+ char *s;
+{
+ while (*s && (*s != '\n'))
+ if ((*s++ == '*') && (*s == '/')) return -1;
+ return 0;
+}
+\f
+/* Output a line
+ * Accepts: string
+ */
+
+void poot (s)
+ char *s;
+{
+ if (s) fputs (s,stdout);
+}
+
+
+/* Skip prefix
+ * Accepts: string
+ * Returns: updated string
+ */
+
+char *skipfx (s)
+ char *s;
+{
+ char c,*t = s,*tt;
+ /* skip leading whitespace too */
+ while ((*s == ' ') || (*s == '\t')) *s++;
+ if (s != t) {
+ c = *s; /* save character */
+ *s = '\0'; /* tie off prefix */
+ poot (t); /* output prefix */
+ *s = c; /* restore character */
+ }
+ /* a typedef? */
+ if (((s[0] == 't') && (s[1] == 'y') && (s[2] == 'p') && (s[3] == 'e') &&
+ (s[4] == 'd') && (s[5] == 'e') && (s[6] == 'f')) &&
+ (t = fndws (s)) && (t = fndnws (t))) {
+ if ((t[0] == 'u') && (t[1] == 'n') && (t[2] == 's') && (t[3] == 'i') &&
+ (t[4] == 'g') && (t[5] == 'n') && (t[6] == 'e') && (t[7] == 'd') &&
+ (tt = fndws (t+7)) && (tt = fndnws (tt))) t = tt;
+ c = *t; /* save character */
+ *t = '\0'; /* tie off prefix */
+ poot (s); /* output prefix */
+ *t = c; /* restore character */
+ s = t; /* new string pointer */
+ }
+ /* static with known prefix */
+ else if (((s[0] == 's') && (s[1] == 't') && (s[2] == 'a') &&
+ (s[3] == 't') && (s[4] == 'i') && (s[5] == 'c') &&
+ (s[6] == ' ')) &&
+ (((s[7] == 'u') && (s[8] == 'n') && (s[9] == 's') &&
+ (s[10] == 'i') && (s[11] == 'g') && (s[12] == 'n') &&
+ (s[13] == 'e') && (s[14] == 'd')) ||
+ ((s[7] == 's') && (s[8] == 't') && (s[9] == 'r') &&
+ (s[10] == 'u') && (s[11] == 'c') && (s[12] == 't')) ||
+ ((s[7] == 'd') && (s[8] == 'o')) ||
+ ((s[9] == 'e') && (s[10] == 'l') && (s[11] == 's') &&
+ (s[12] == 'e'))) &&
+ (t = fndws (s)) && (t = fndnws (t)) &&
+ (t = fndws (t)) && (t = fndnws (t))) {
+ c = *t; /* save character */
+ *t = '\0'; /* tie off prefix */
+ poot (s); /* output prefix */
+ *t = c; /* restore character */
+ s = t; /* new string pointer */
+ }
+ /* one of the known prefixes? */
+ else if ((((s[0] == 'u') && (s[1] == 'n') && (s[2] == 's') &&
+ (s[3] == 'i') && (s[4] == 'g') && (s[5] == 'n') &&
+ (s[6] == 'e') && (s[7] == 'd')) ||
+ ((s[0] == 's') && (s[1] == 't') && (s[2] == 'r') &&
+ (s[3] == 'u') && (s[4] == 'c') && (s[5] == 't')) ||
+ ((s[0] == 's') && (s[1] == 't') && (s[2] == 'a') &&
+ (s[3] == 't') && (s[4] == 'i') && (s[5] == 'c')) ||
+ ((s[0] == 'd') && (s[1] == 'o')) ||
+ ((s[0] == 'e') && (s[1] == 'l') && (s[2] == 's') &&
+ (s[3] == 'e'))) &&
+ (t = fndws (s)) && (t = fndnws (t))) {
+ c = *t; /* save character */
+ *t = '\0'; /* tie off prefix */
+ poot (s); /* output prefix */
+ *t = c; /* restore character */
+ s = t; /* new string pointer */
+ }
+ /* may look like a proto, but isn't */
+ else if ((s[0] == 'r') && (s[1] == 'e') && (s[2] == 't') && (s[3] == 'u') &&
+ (s[4] == 'r') && (s[5] == 'n')) {
+ poot (s);
+ return 0;
+ }
+ return s;
+}
+\f
+/* UnANSI a line
+ * Accepts: string
+ */
+
+void unansi (s)
+ char *s;
+{
+ char c,*t = s,*u,*v;
+ while (t[1] && (t[1] != '\n')) t++;
+ switch (*t) {
+ case ',': /* continued on next line? */
+ /* slurp remainder of line */
+ fgets (t + 1,LINELENGTH - (t + 1 - s),stdin);
+ unansi (s); /* try again */
+ break;
+ case ';': /* function prototype? */
+ /* yes, tie it off */
+ *(fndws (fndnws (fndws (fndnws (s))))) = '\0';
+ printf ("%s ();\n",s); /* and output non-ANSI form */
+ break;
+ case ')':
+ *t = '\0'; /* tie off args */
+ if (*(t = fndnws (fndws (fndnws (fndws (fndnws (s)))))) == '(') {
+ *t++ = '\0'; /* tie off */
+ while ((*t == ' ') || (*t == '\t')) t++;
+ if ((t[0] == 'v') && (t[1] == 'o') && (t[2] == 'i') && (t[3] == 'd') &&
+ !t[4]) *t = '\0'; /* make void be same as null */
+ printf ("%s(",s); /* output start of function */
+ s = t;
+ while (*s) { /* for each argument */
+ while ((*s == ' ') || (*s == '\t')) s++;
+ for (u = v = s; (*u && (*u != ',') && (*u != '[')); u++)
+ if ((*u == ' ') || (*u == '\t')) v = u;
+ c = *u; /* remember delimiter */
+ *u = '\0'; /* tie off argument name */
+ while (*++v == '*'); /* remove leading pointer indication */
+ fputs (v,stdout); /* write variable name */
+ *(s = u) = c; /* restore delimiter */
+ while (*s && (*s != ',')) *s++;
+ if (*s) fputc (*s++,stdout);
+ }
+ puts (")"); /* end of function */
+ while (*t) { /* for each argument */
+ fputs (" ",stdout);
+ while ((*t == ' ') || (*t == '\t')) t++;
+ while (*t && (*t != ',')) fputc (*t++,stdout);
+ puts (";");
+ if (*t == ',') t++;
+ }
+ }
+ else printf ("%s)",s); /* say what?? */
+ break;
+ default: /* doesn't look like a function */
+ poot (s);
+ }
+}
+\f
+main ()
+{
+ char *s,*t,line[LINELENGTH];
+ int c;
+ while (s = fgets (line,LINELENGTH,stdin)) switch (line[0]) {
+ case '/': /* comment */
+ if ((s[1] != '*') || fndcmt (s+2)) poot (line);
+ else do poot (line);
+ while (!fndcmt (line) && (s = fgets (line,LINELENGTH,stdin)));
+ break;
+ case '{': /* open function */
+ case '}': /* close function */
+ case '\f': /* formfeed */
+ case '\n': /* newline */
+ case '#': /* preprocessor command */
+ poot (line);
+ break;
+ case '\t': /* whitespace */
+ case ' ':
+ /* look like function arg def in structure? */
+ if ((t = skipfx (line)) && (s = fndws (t)) && (s = fndnws (s)) &&
+ (((*s == '(') && (s[1] == '*')) ||
+ ((*s == '*') && (s[1] == '(') && (s[2] == '*'))) &&
+ (s = fndws (s)) && (s[-1] == ')') && (s = fndnws (s)) && (*s == '('))
+ unansi (t);
+ else poot (t);
+ break;
+ default: /* begins with anything else */
+ /* look like function proto or def? */
+ if ((t = skipfx (line)) && (s = fndws (t)) && (s = fndnws (s)) &&
+ (s = fndws (s)) && (s = fndnws (s)) && (*s == '('))
+ unansi (t);
+ else poot (t);
+ break;
+ }
+}
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