From: mdw Date: Wed, 28 Apr 1999 19:58:06 +0000 (+0000) Subject: Initial revision X-Git-Tag: 1.1.0~5 X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~mdw/git/quine/commitdiff_plain/267c6003e8f73b1e1d1f918a8d9e149db26e9a6a Initial revision --- 267c6003e8f73b1e1d1f918a8d9e149db26e9a6a diff --git a/.cvsignore b/.cvsignore new file mode 100644 index 0000000..355595b --- /dev/null +++ b/.cvsignore @@ -0,0 +1,6 @@ +Makefile.in +aclocal.m4 +build +configure +qqlout.c +qqout.c diff --git a/.links b/.links new file mode 100644 index 0000000..21d12bd --- /dev/null +++ b/.links @@ -0,0 +1,8 @@ +COPYING +INSTALL +install-sh +mdwopt.c +mdwopt.h +missing +mkinstalldirs +missing diff --git a/AUTHORS b/AUTHORS new file mode 100644 index 0000000..e69de29 diff --git a/ChangeLog b/ChangeLog new file mode 100644 index 0000000..e69de29 diff --git a/Makefile.am b/Makefile.am new file mode 100644 index 0000000..cc5036a --- /dev/null +++ b/Makefile.am @@ -0,0 +1,107 @@ +## Process with `automake' to generate `Makefile.in' +## -*-makefile-*- +## +## $Id: Makefile.am,v 1.1 1999/04/28 19:58:07 mdw Exp $ +## +## Makefile for Quine +## +## (c) 1999 Mark Wooding +## + +##----- Licensing notice ---------------------------------------------------- +## +## This file is part of Quine. +## +## Quine is free software; you can redistribute it and/or modify it +## under the terms of the GNU General Public License as published by +## the Free Software Foundation; either version 2 of the License, or +## (at your option) any later version. +## +## Quine is distributed in the hope that it will be useful, but +## WITHOUT ANY WARRANTY; without even the implied warranty of +## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +## GNU General Public License for more details. +## +## You should have received a copy of the GNU General Public License +## along with Quine; if not, write to the Free Software Foundation, +## Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +##----- Revision history ---------------------------------------------------- +## +## $Log: Makefile.am,v $ +## Revision 1.1 1999/04/28 19:58:07 mdw +## Initial revision +## + +AUTOMAKE_OPTIONS = foreign + +## --- What needs installing --- + +bin_PROGRAMS = quine +noinst_PROGRAMS = ansicquine +include_HEADERS = quine.h + +## --- How to build the program --- + +quine_SOURCES = quine.c qqout.c mdwopt.c quine.h mdwopt.h +ansicquine_SOURCES = ansicquine.c +EXTRA_DIST = qqlib.c qqout.c qqlout.c rexxquine.exec bournequine +CLEANFILES = xquine yquine +MAINTAINERCLEANFILES = qqout.c qqlout.c $(srcdir)/qqout.c $(srcdir)/qqlout.c + +## --- I need recursive makeness --- +## +## In this way, I can rebuild `xquine' and `yquine' only when they really +## get needed. + +@SET_MAKE@ + +## --- Some hacking for the bootstrapping process --- +## +## The outputtable library gets built from `qqlib.c'. I therefore have to +## build a `quine' which can do this. This is `xquine'. Then, I can +## build a `yquine' which is capable of writing full `qqout.c' files, with +## which I can build the final glorious `quine'. + +xquine: xquine.o qqlib.o mdwopt.o + $(LINK) xquine.o qqlib.o mdwopt.o +xquine.o: quine.c + $(COMPILE) -c -DQQ_XQUINE $(srcdir)/quine.c -o xquine.o + +yquine: yquine.o qqlib.o qqlout.o mdwopt.o + $(LINK) yquine.o qqlib.o qqlout.o mdwopt.o +yquine.o: quine.c + $(COMPILE) -c -DQQ_YQUINE $(srcdir)/quine.c -o yquine.o + +## --- The `qqlout.c' file --- +## +## The contents of `qqlib.c' are included in every `qqout.c' file we write. +## But I've got to get it from somewhere so that I can write it to the first +## `qqout.c' file. The solution is, as described above, to use a cut-down +## `quine' program which can just about build `qqlout.c' which contains only +## the library. + +qqlout.c: qqlib.c + if [ -z "$(qq_xquine)" ]; then \ + $(MAKE) qq_xquine=true xquine; \ + else :; fi + ./xquine --qqlib $(srcdir)/qqlib.c -o qqlout.c + +## --- The `qqout.c' file --- +## +## This contains the complete source code for the program. + +qqout.c: quine.c qqlout.c qqlib.c mdwopt.c quine.h mdwopt.h + if [ -z "$(qq_yquine)" ]; then \ + $(MAKE) qq_yquine=true yquine; \ + else :; fi + touch qqout.c + -ln qqout.c qqlout.c $(srcdir) + $(MAKE) distdir + rm qqout.c + find $(distdir) \( -type f -o -type l \) ! -name qqout.c -print | \ + ./yquine -o $(distdir)/qqout.c + ln $(distdir)/qqout.c qqout.c + rm -rf $(distdir) + +##----- That's all, folks --------------------------------------------------- diff --git a/README b/README new file mode 100644 index 0000000..c7d2f6a --- /dev/null +++ b/README @@ -0,0 +1,72 @@ +Quine +~~~~~ + +The `Jargon File' (well, my GNU Info edition) defines a `quine' as: + +:quine: /kwi:n/ n. [from the name of the logician Willard + van Orman Quine, via Douglas Hofstadter] A program that generates a + copy of its own source text as its complete output. Devising the + shortest possible quine in some given programming language is a + common hackish amusement. Here is one classic quine: + + ((lambda (x) + (list x (list (quote quote) x))) + (quote + (lambda (x) + (list x (list (quote quote) x))))) + + This one works in LISP or Scheme. It's relatively easy to write + quines in other languages such as Postscript which readily handle + programs as data; much harder (and thus more challenging!) in + languages like C which do not. Here is a classic C quine for ASCII + machines: + + char*f="char*f=%c%s%c;main() + {printf(f,34,f,34,10);}%c"; + main(){printf(f,34,f,34,10);} + + For excruciatingly exact quinishness, remove the interior line + breaks. Some infamous *note Obfuscated C Contest:: entries have been + quines that reproduced in exotic ways. + +Small quines, like the one above (or the author's strictly conformant +ANSI C version) have been around for ages. However, I'm not aware of +any programs which provide quine support for arbitrary pieces of +software. The `quine' program is intended to remedy this omission. + +Building the package is easy. Run the `configure' script, and then say +`make'. This then gowes through the rather convoluted build process +automatically, and produces a binary `quine'. + +As an example of `quine's ability to enquine programs, it is (of course) +a quine itself. To demonstrate this, run the command + + ./quine --quine + +It should (very quickly) create a `quine' source distribution in the +current directory. + +Conferring quineishness upon other programs isn't hard. You require the +`quine.h' file from the source distribution (`make install' will install +it in some standard place for you), and the `quine' binary. + +The `quine' program works by writing a file describing the contents of +your source files, and the code necessary to recreate them. It reads +the names of your sources from standard input and writes (by default) to +`qqout.c'; thus an incantation like + + find . -type f -print | quine + +should be sufficient to build the `qqout.c' file. Then all you need to +do to your code to output the source code is call `qq_create' to build a +distribution directory, or `qq_dump(STREAM)' to dump the source code to +the output stream STREAM. Easy, no? + +The author's own preference for creating source distributions is to +create a distribution directory (with `make distdir') and use `find' +within that to build the `qqout.c' file. See the `Makefile.am' to see +how this was achieved for `quine' itself. (Note that `quine' has to use +itself to build its `qqout.c' file, which makes the whole procedure a +little more interesting.) + +I'll admit it: this isn't what you'd call a `useful' program. diff --git a/ansicquine.c b/ansicquine.c new file mode 100644 index 0000000..4044a74 --- /dev/null +++ b/ansicquine.c @@ -0,0 +1,2 @@ +#include +int main(void){char n='\n';char b='\\';char q='"';char*p="#include %cint main(void){char n='%cn';char b='%c%c';char q='%c';char*p=%c%s%c;printf(p,n,b,b,b,q,q,p,q,n);return 0;}%c";printf(p,n,b,b,b,q,q,p,q,n);return 0;} diff --git a/bournequine b/bournequine new file mode 100755 index 0000000..9ed62fe --- /dev/null +++ b/bournequine @@ -0,0 +1,3 @@ +#! /bin/sh +q="'" qq='echo \#! /bin/sh;echo q=\"$q\" qq=${q}$qq$q;echo eval \$qq' +eval $qq diff --git a/configure.in b/configure.in new file mode 100644 index 0000000..5f9773c --- /dev/null +++ b/configure.in @@ -0,0 +1,41 @@ +dnl -*-fundamental-*- +dnl +dnl $Id: configure.in,v 1.1 1999/04/28 19:58:07 mdw Exp $ +dnl +dnl Configure script for Quine +dnl +dnl (c) 1999 Mark Wooding +dnl + +dnl----- Licensing notice --------------------------------------------------- +dnl +dnl This file is part of Quine. +dnl +dnl Quine is free software; you can redistribute it and/or modify it +dnl under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2 of the License, or +dnl (at your option) any later version. +dnl +dnl Quine is distributed in the hope that it will be useful, but +dnl WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with Quine; if not, write to the Free Software Foundation, +dnl Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +dnl----- Revision history --------------------------------------------------- +dnl +dnl $Log: configure.in,v $ +dnl Revision 1.1 1999/04/28 19:58:07 mdw +dnl Initial revision +dnl + +AC_INIT(quine.c) +AM_INIT_AUTOMAKE(quine, 1.1.0) +AC_ARG_PROGRAM +AC_PROG_CC +AC_PROG_MAKE_SET +mdw_GCC_FLAGS +AC_OUTPUT(Makefile) diff --git a/qqlib.c b/qqlib.c new file mode 100644 index 0000000..9edacbc --- /dev/null +++ b/qqlib.c @@ -0,0 +1,356 @@ +/* -*-c-*- + * + * $Id: qqlib.c,v 1.1 1999/04/28 19:58:07 mdw Exp $ + * + * Useful library of tools for quines + * + * (c) 1999 Mark Wooding + */ + +/*----- Licensing notice --------------------------------------------------* + * + * This file is part of Quine + * + * Quine is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Quine is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Quine; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * However, when this source text is embedded in a file by the Quine + * program, you may do anything you like with the resulting text; + * distribution and modification are not limited by the General Public + * License. + */ + +/*----- Revision history --------------------------------------------------* + * + * $Log: qqlib.c,v $ + * Revision 1.1 1999/04/28 19:58:07 mdw + * Initial revision + * + */ + +/*----- Header files ------------------------------------------------------*/ + +/* --- ANSI headers --- */ + +#include +#include +#include +#include +#include + +/* --- POSIX headers --- */ + +#ifndef QUINE_PORTABLE +# include +# include +# include +# include +#endif + +/* --- Local headers --- */ + +#include "quine.h" + +/*----- Macro hacking -----------------------------------------------------*/ + +#ifdef QUINE_PORTABLE +# define PORT(x) x +# define NPORT(x) +#else +# define PORT(x) +# define NPORT(x) x +#endif + +/*----- Main code ---------------------------------------------------------*/ + +/* --- @qq_xlate@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char *p@ = pointer to encoded text + * + * Returns: --- + * + * Use: Writes the decoded string to the given file handle. + */ + +void qq_xlate(FILE *fp, const char *p) +{ + while (*p) { + if (*p == '%') { + p++; + switch (*p) { + case 'q': fputc('\"', fp); break; + case 'b': fputc('\\', fp); break; + case 't': fputc('\t', fp); break; + case 'n': fputc('\n', fp); break; + case 'a': fputc('\a', fp); break; + case 'r': fputc('\r', fp); break; + case '0': fputc('\0', fp); break; + case '%': fputc('%', fp); break; + case 'x': { + unsigned char ch = 0; + p++; + while (*p != '%') { + unsigned int x = *p++; + x -= '0'; + if (x >= 10) x -= 'a' - '0' - 10; + if (x >= 16) x -= 'A' - 'a'; + ch = (ch << 4) + x; + } + fputc(ch, fp); + } break; + default: + p--; + break; + } + } else + fputc(*p, fp); + p++; + } +} + +/* --- @qq_file@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char **p@ = pointer to the output array + * + * Returns: --- + * + * Use: Writes the contents of a file to the output. + */ + +void qq_file(FILE *fp, const char **p) +{ + while (*p) + qq_xlate(fp, *p++); +} + +/* --- @qq_head@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * + * Returns: --- + * + * Use: Writes the head of a `qqout.c' file. + */ + +void qq_head(FILE *fp) +{ + fputs("/* quine output file */\n\n", fp); +} + +/* --- @qq_body@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char ***p@ = pointer to main table + * + * Returns: --- + * + * Use: Writes the body table of a `qqout.c' file. + */ + +void qq_body(FILE *fp, const char ***p) +{ + size_t fno = 0; + const char **q; + + fputs("/* --- file contents tables --- */\n\n", fp); + while (*p) { + q = *p; + fprintf(fp, "static const char *qq__c_%lx[] = {\n", (unsigned long)fno); + fprintf(fp, "/* Filename: */ \"%s\",\n", *q++); + if (strncmp(*q, "%!", 2) == 0) + fprintf(fp, "/* Mode: */ \"%s\",\n", *q++); + while (*q) + fprintf(fp, "\"%s\",\n", *q++); + fputs("0\n};\n\n", fp); + p++; + fno++; + } +} + +/* --- @qq_tail@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char **qql@ = pointer to qqlib file array + * @size_t fno@ = number of files written + * @const char *fn@ = name of `qqout.c' file + * + * Returns: --- + * + * Use: Writes the head of a `qqout.c' file. + */ + +void qq_tail(FILE *fp, const char **qql, size_t fno, const char *fn) +{ + const char **p; + size_t i; + + /* --- Write out the qqlib array --- */ + + fputs("/* --- qqlib code --- */\n\n" + "const char *qq_qqlib[] = {\n", fp); + for (p = qql; *p; p++) + fprintf(fp, "\"%s\",\n", *p); + fputs("0\n};\n\n", fp); + + /* --- Build the main array --- */ + + fputs("/* --- table of files to output --- */\n\n" + "const char **qq_table[] = {\n", fp); + for (i = 0; i < fno; i++) + fprintf(fp, " qq__c_%lx,\n", (unsigned long)i); + fputs(" 0\n};\n\n", fp); + + /* --- Now output the qqlib code --- */ + + fputs("#define QQ_OUT\n\n", fp); + qq_file(fp, qql); + + /* --- Finally write the code to write everything out --- */ + + fprintf(fp, + "/* --- quine output routines --- */\n\n" + "void qq_dump(FILE *fp) {\n" + " qq__dump(fp, qq_table, qq_qqlib, \"%s\", %lu);\n" + "}\n" + "int qq_create(void) {\n" + " return (qq__create(qq_table, qq_qqlib, \"%s\", %lu));\n" + "}\n\n", + fn, (unsigned long)fno, fn, (unsigned long)fno); +} + +/* --- @qq_mkfile@ --- * + * + * Arguments: @const char *fn@ = pointer to a filename + * @int mode@ = file mode to use (only in Unix-specific version) + * + * Returns: A handle for the created file. + * + * Use: Creates a file, and leading directories and stuff. + */ + +#ifdef QUINE_PORTABLE +FILE *qq_mkfile(const char *fn) +{ + return (fopen(fn, "w")); +} +#else +FILE *qq_mkfile(const char *fn, int mode) +{ + char buf[FILENAME_MAX]; + char *p; + int fd; + + strcpy(buf, fn); + p = strchr(buf, '/'); + for (;;) { + if (!p) + break; + *p = 0; + mkdir(buf, 0777); + *p = '/'; + p = strchr(p + 1, '/'); + } + + fd = open(fn, O_WRONLY|O_CREAT|O_TRUNC, mode); + return (fd >=0 ? fdopen(fd, "w") : 0); +} +#endif + +#ifdef QQ_OUT + +/* --- @qq__dump@ --- * + * + * Arguments: @FILE *fp@ = file to dump on + * @const char ***p@ = pointer to main table + * @const char **qql@ = pointer to qqlib code + * @const char *fn@ = name of `qqout.c' file + * @size_t fno@ = number of files to be output + * + * Returns: --- + * + * Use: Outputs the entire source code to a given file. + */ + +static void qq__dump(FILE *fp, const char ***p, const char **qql, + const char *fn, size_t fno) +{ + const char ***q = p; + + while (*q) { + fprintf(fp, "******** %s\n\n", **q); + qq_file(fp, *q + 1); + q++; + } + fprintf(fp, "******** %s\n\n", fn); + qq_head(fp); + qq_body(fp, p); + qq_tail(fp, qql, fno, fn); +} + +/* --- @qq__create@ --- * + * + * Arguments: @const char ***p@ = pointer to main table + * @const char **qql@ = pointer to qqlib code + * @const char *fn@ = name of `qqout.c' file + * @size_t fno@ = number of files to be output + * + * Returns: Zero if all went well, else nonzero. + * + * Use: Rebuilds the original source distribution. + */ + +static int qq__create(const char ***p, const char **qql, + const char *fn, size_t fno) +{ + FILE *fp; + const char ***q = p; + + while (*q) { + const char **qq = *q + 1; + +#ifdef QUINE_PORTABLE + if (strncmp(*qq, "%!", 2) == 0) + qq++; + fp = qq_mkfile(*qq); +#else + if (strncmp(*qq, "%!", 2) == 0) { + fp = qq_mkfile(**q, (int)strtol(*qq + 2, 0, 8)); + qq++; + } else + fp = qq_mkfile(**q, 0666); +#endif + + if (!fp) + return (-1); + qq_file(fp, qq); + if (fclose(fp)) + return (-1); + q++; + } + fp = qq_mkfile(fn, 0666); + if (!fp) + return (-1); + qq_head(fp); + qq_body(fp, p); + qq_tail(fp, qql, fno, fn); + if (fclose(fp)) + return (-1); + return (0); +} + +#endif + +/*----- That's all, folks -------------------------------------------------*/ diff --git a/quine.c b/quine.c new file mode 100644 index 0000000..ab7c5ef --- /dev/null +++ b/quine.c @@ -0,0 +1,513 @@ +/* -*-c-*- + * + * $Id: quine.c,v 1.1 1999/04/28 19:58:07 mdw Exp $ + * + * Output a program's source code as a quine file + * + * (c) 1999 Mark Wooding + */ + +/*----- Licensing notice --------------------------------------------------* + * + * This file is part of Quine + * + * Quine is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Quine is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Quine; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/*----- Revision history --------------------------------------------------* + * + * $Log: quine.c,v $ + * Revision 1.1 1999/04/28 19:58:07 mdw + * Initial revision + * + */ + +/*----- Header files ------------------------------------------------------*/ + +/* --- ANSI headers --- */ + +#include +#include +#include +#include +#include +#include + +/* --- POSIX headers --- */ + +#ifndef QUINE_PORTABLE +#include +#include +#endif + +/* --- Local headers --- */ + +#include "mdwopt.h" +#include "quine.h" + +/*----- Main code ---------------------------------------------------------*/ + +/* --- @die@ --- * + * + * Arguments: @const char *f@ = a @printf@-style format string + * @...@ = other arguments + * + * Returns: Never. + * + * Use: Reports an error and hari-kiris. Like @moan@ above, only + * more permanent. + */ + +void die(const char *f, ...) +{ + va_list ap; + va_start(ap, f); + fprintf(stderr, "%s: ", optprog); + vfprintf(stderr, f, ap); + va_end(ap); + putc('\n', stderr); + exit(EXIT_FAILURE); +} + +/* --- @quine__banner@ --- * + * + * Arguments: @FILE *fp@ = file to write on + * + * Returns: --- + * + * Use: Writes a banner to the given file. + */ + +static void quine__banner(FILE *fp) +{ + fprintf(fp, "%s quine generator v. 1.1\n", optprog); +} + +/* --- @quine__usage@ --- * + * + * Arguments: @FILE *fp@ = file to write on + * + * Returns: --- + * + * Use: Writes a usage note to the given file. + */ + +static void quine__usage(FILE *fp) +{ + fprintf(fp, "Usage: %s [-hv0n] [-f FILE] [FILE...]\n", optprog); +} + +/* --- @quine__help@ --- * + * + * Arguments: @FILE *fp@ = file to write on + * + * Returns: --- + * + * Use: Writes a help message to the given file. + */ + +static void quine__help(FILE *fp) +{ + quine__banner(fp); + putc('\n', fp); + quine__usage(fp); + putc('\n', fp); + fputs( +"Given a list of source files, constructs a C source file which will write\n" +"the sources, and itself, when requested. In this way, it is easy to\n" +"create programs which contain their own source distributions, thus\n" +"fulfilling the requirements of the GNU General Public License with a\n" +"single binary program.\n" +"\n" +"The following options are provided:\n" +"\n" +"-h, --help\t\tdisplay this help message\n" +"-v, --version\t\tshow the program's version number\n" +"-0, --null\t\tread null terminated filenames\n" +"-l, --qqlib\t\tused while bootstrapping `quine'\n" +"-f, --file=FILE\t\tread filenames from FILE\n" +"-o, --output=FILE\twrite output quine data to FILE\n" +"-q, --quine\t\tbuild `quine's source distribution\n" +"-Q, --quine-dump\twrite `quine's source code to standard output\n", +fp); +} + +/* --- @quine__readLine@ --- * + * + * Arguments: @FILE *fp@ = pointer to input file + * @char **p@ = address of pointer to set up + * @size_t *sz@ = address of array length + * @const char *delim@ = array of delimiters + * + * Returns: Pointer to allocated line if all OK, otherwise zero. + * + * Use: Reads a line of input from the file. + */ + +static char *quine__readLine(FILE *fp, char **p, size_t *sz, + const char *delim) +{ + size_t len = 0; + char *q; + const char *d; + int ch; + + /* --- If I couldn't make my initial buffer, there's no hope --- */ + + if (!*p) { + *sz = 64; + *p = malloc(*sz); + if (!*p) + die("out of memory"); + } + + /* --- Skip over initial delimiters --- */ + +skip_delims: + ch = getc(fp); + if (ch == EOF) + return (0); + d = delim; + do { + if (ch == (unsigned char)*d) + goto skip_delims; + } while (*d++); + + /* --- Read characters into the buffer --- */ + + for (;;) { + + /* --- If not enough buffer space, double the buffer --- * + * + * The plus-one is for the null byte on the end. + */ + + if (len + 1 >= *sz) { + *sz <<= 1; + q = realloc(p, *sz); + if (!q) + die("out of memory"); + *p = q; + } + (*p)[len++] = ch; + + /* --- Read and check the next byte --- */ + + ch = getc(fp); + if (ch == EOF) + goto done; + d = delim; + do { + if (ch == (unsigned char)*d) + goto done; + } while (*d++); + } + + /* --- Terminate the string and return --- */ + +done: + (*p)[len++] = 0; + return (*p); +} + +/* --- @quine__doFile@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @FILE *ifp@ = input file + * + * Returns: --- + * + * Use: Outputs the contents of a quine block containing the given + * file. + */ + +static void quine__doFile(FILE *fp, FILE *ifp) +{ + char *p; + char buff[80]; + int ch; + + for (;;) { + p = buff; + ch = getc(ifp); + if (ch == EOF) + break; + for (;;) { + *p++ = ch; + if (ch == '\n' || p >= buff + sizeof(buff)) + break; + ch = getc(ifp); + } + fputc('\"', fp); + for (p = buff; p < buff + sizeof(buff); p++) { + switch (*p) { + case '\"': fputs("%q", fp); break; + case '\\': fputs("%b", fp); break; + case '\t': fputs("%t", fp); break; + case '\n': fputs("%n", fp); break; + case '\a': fputs("%a", fp); break; + case '\r': fputs("%r", fp); break; + case '\0': fputs("%0", fp); break; + case '%': fputs("%%", fp); break; + default: + if (isprint((unsigned char)*p)) + fputc(*p, fp); + else + fprintf(fp, "%%x%02x%%", (unsigned char)*p); + break; + } + if (*p == '\n') + break; + } + fputs("\",\n", fp); + } + fclose(ifp); + + fputs("0\n};\n\n", fp); +} + +/* --- @quine__file@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char *name@ = name of input file + * @size_t fno@ = number of this file + * + * Returns: --- + * + * Use: Outputs a quine block containing the given file. + */ + +static void quine__file(FILE *fp, const char *name, size_t fno) +{ + FILE *ifp; + + fprintf(fp, "static const char *qq__c_%lx[] = {\n", (unsigned long)fno); + + if ((ifp = fopen(name, "r")) == 0) + die("couldn't read `%s': %s", name, strerror(errno)); + fprintf(fp, "/* Filename: */ \"%s\",\n", name); + + /* --- Write file's mode to the output --- */ + +#ifndef QUINE_PORTABLE + { + struct stat st; + if (stat(name, &st) == 0) + fprintf(fp, "/* Mode: */ \"%%!0%03o\",\n", st.st_mode & 07777); + } +#endif + + quine__doFile(fp, ifp); +} + +/* --- Dummy quine library --- */ + +#ifdef QQ_XQUINE + +const char *qq_qqlib[] = { + "/* --- No quine library available in xquine --- */%n", + 0 +}; + +#endif + +/* --- @main@ --- * + * + * Arguments: @int argc@ = number of command line arguments + * @char *argv[]@ = pointer to the command line arguments + * + * Returns: Zero if successful, @EXIT_FAILURE@ if not. + * + * Use: Given a number of source files, outputs C code which prints + * them (and itself). + */ + +int main(int argc, char *argv[]) +{ + char *inf = 0; + char *outf = 0; + char *qqlibf = 0; + unsigned int f = 0; + FILE *infp = 0, *outfp = 0; + size_t files = 0; + + enum { + f_duff = 1, + f_null = 2, + f_noFiles = 4 + }; + + /* --- Scan the command line arguments --- */ + + for (;;) { + int i; + + static struct option opts[] = { + { "help", 0, 0, 'h' }, + { "version", 0, 0, 'v' }, + { "null", 0, 0, '0' }, + { "file", gFlag_argReq, 0, 'f' }, + { "nofiles", 0, 0, 'n' }, + { "output", gFlag_argReq, 0, 'o' }, + { "qqlib", gFlag_argReq, 0, 'l' }, +#if !defined(QQ_XQUINE) && !defined(QQ_YQUINE) + { "quine", 0, 0, 'q' }, + { "quine-dump", 0, 0, 'Q' }, +#endif + { 0, 0, 0, 0 } + }; + +#if !defined(QQ_XQUINE) && !defined(QQ_YQUINE) +# define OPTS "hv0nf:o:lqQ" +#else +# define OPTS "hv0nf:o:l" +#endif + + i = mdwopt(argc, argv, OPTS, opts, 0, 0, 0); + + if (i < 0) + break; + + switch (i) { + case 'h': + quine__help(stdout); + exit(0); + case 'v': + quine__banner(stdout); + exit(0); + case '0': + f |= f_null; + break; + case 'f': + inf = optarg; + break; + case 'o': + outf = optarg; + break; + case 'l': + qqlibf = optarg; + break; + case 'n': + f |= f_noFiles; + break; +#if !defined(QQ_XQUINE) && !defined(QQ_YQUINE) + case 'q': + if (qq_create()) + die("couldn't build source distribution: %s", strerror(errno)); + exit(0); + case 'Q': + qq_dump(stdout); + exit(0); + break; +#endif + default: + f |= f_duff; + break; + } + } + + if (f & f_duff) { + quine__usage(stderr); + exit(EXIT_FAILURE); + } + + /* --- Output a file as the qqlib library --- */ + + if (qqlibf) { + infp = fopen(qqlibf, "r"); + if (!infp) + die("couldn't open input file `%s': %s", inf, strerror(errno)); + + if (!outf) + outf = "qqlout.c"; + if (strcmp(outf, "-") == 0) + outfp = stdout; + else + outfp = fopen(outf, "w"); + if (!outfp) + die("couldn't open output file `%s': %s", outf, strerror(errno)); + + fputs("/* quine library data */\n\n" + "const char *qq_qqlib[] = {\n", outfp); + quine__doFile(outfp, infp); + fclose(infp); + fclose(outfp); + exit(0); + } + + /* --- Time to start work --- */ + + if (~f & f_noFiles && (inf || optind == argc)) { + if (!inf || strcmp(inf, "-") == 0) + infp = stdin; + else + infp = fopen(inf, "r"); + if (!infp) + die("couldn't open input file `%s': %s", inf, strerror(errno)); + } + + if (!outf) + outf = "qqout.c"; + if (strcmp(outf, "-") == 0) + outfp = stdout; + else + outfp = fopen(outf, "w"); + if (!outfp) + die("couldn't open output file `%s': %s", outf, strerror(errno)); + + /* --- Output a header --- */ + + qq_head(outfp); + fputs("/* --- file contents tables --- */\n\n", outfp); + + /* --- Scan the command line first --- */ + + while (~f & f_noFiles && optind < argc) + quine__file(outfp, argv[optind++], files++); + + /* --- Now read the input file --- */ + + if (infp) { + char *p = 0; + char *q; + const char *del; + size_t sz = 0; + + if (f & f_null) + del = ""; + else + del = " \n\t"; + + while ((q = quine__readLine(infp, &p, &sz, del)) != 0) + quine__file(outfp, q, files++); + + if (fclose(infp)) + die("error reading input: %s", strerror(errno)); + } + + /* --- And output the trailer --- */ + + qq_tail(outfp, qq_qqlib, files, + strcmp(outf, "-") == 0 ? "" : outf); + + /* --- Done --- */ + + if (outfp != stdout && fclose(outfp)) + die("error writing output: %s", strerror(errno)); + + return (0); +} + +/*----- That's all, folks -------------------------------------------------*/ diff --git a/quine.h b/quine.h new file mode 100644 index 0000000..6135da8 --- /dev/null +++ b/quine.h @@ -0,0 +1,161 @@ +/* -*-c-*- + * + * $Id: quine.h,v 1.1 1999/04/28 19:58:07 mdw Exp $ + * + * Definitions for building quines + * + * (c) 1999 Mark Wooding + */ + +/*----- Licensing notice --------------------------------------------------* + * + * This file is part of Quine + * + * Quine is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * Quine is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with Quine; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +/*----- Revision history --------------------------------------------------* + * + * $Log: quine.h,v $ + * Revision 1.1 1999/04/28 19:58:07 mdw + * Initial revision + * + */ + +#ifndef QUINE_H +#define QUINE_H + +#ifdef __cplusplus + extern "C" { +#endif + +/*----- Required headers --------------------------------------------------*/ + +#include + +/*----- External tables ---------------------------------------------------*/ + +extern const char **qq_table[]; +extern const char *qq_qqlib[]; + +/*----- Functions provided ------------------------------------------------*/ + +/* --- @qq_xlate@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char *p@ = pointer to encoded text + * + * Returns: --- + * + * Use: Writes the decoded string to the given file handle. + */ + +extern void qq_xlate(FILE */*fp*/, const char */*p*/); + +/* --- @qq_file@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char **p@ = pointer to the output array + * + * Returns: --- + * + * Use: Writes the contents of a file to the output. + */ + +extern void qq_file(FILE */*fp*/, const char **/*p*/); + +/* --- @qq_head@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * + * Returns: --- + * + * Use: Writes the head of a `qqout.c' file. + */ + +extern void qq_head(FILE */*fp*/); + +/* --- @qq_body@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char ***p@ = pointer to main table + * + * Returns: --- + * + * Use: Writes the body table of a `qqout.c' file. + */ + +extern void qq_body(FILE */*fp*/, const char ***/*p*/); + +/* --- @qq_tail@ --- * + * + * Arguments: @FILE *fp@ = output file handle + * @const char **qql@ = pointer to qqlib file array + * @size_t fno@ = number of files written + * @const char *fn@ = name of `qqout.c' file + * + * Returns: --- + * + * Use: Writes the head of a `qqout.c' file. + */ + +extern void qq_tail(FILE */*fp*/, const char **/*qql*/, + size_t /*fno*/, const char */*fn*/); + +/* --- @qq_mkfile@ --- * + * + * Arguments: @const char *fn@ = pointer to a filename + * @int mode@ = mode to create file with + * + * Returns: A handle for the created file. + * + * Use: Creates a file, and leading directories and stuff. + */ + +#ifdef QUINE_PORTABLE +extern FILE *qq_mkfile(const char */*fn*/); +#else +extern FILE *qq_mkfile(const char */*fn*/, int /*mode*/); +#endif + +/* --- @qq_dump@ --- * + * + * Arguments: @FILE *fp@ = stream to dump on + * + * Returns: --- + * + * Use: Writes the program's source code to the given file. + */ + +extern void qq_dump(FILE */*fp*/); + +/* --- @qq_create@ --- * + * + * Arguments: --- + * + * Returns: --- + * + * Use: Writes a source distribution to the current directory. + */ + +extern int qq_create(void); + +/*----- That's all, folks -------------------------------------------------*/ + +#ifdef __cplusplus + } +#endif + +#endif diff --git a/rexxquine.exec b/rexxquine.exec new file mode 100644 index 0000000..ccbaa96 --- /dev/null +++ b/rexxquine.exec @@ -0,0 +1,4 @@ +/* */ +q='''' +p='say"/* */";say"q="q||q||q||q;say"p="q||p||q;say"interpret p"' +interpret p