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cdecl.c
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cdecl.c
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/*
* cdecl - ANSI C and C++ declaration composer & decoder
*
* originally written
* Graham Ross
* once at tektronix!tekmdp!grahamr
* now at Context, Inc.
*
* modified to provide hints for unsupported types
* added argument lists for functions
* added 'explain cast' grammar
* added #ifdef for 'create program' feature
* ???? (sorry, I lost your name and login)
*
* conversion to ANSI C
* David Wolverton
* ihnp4!houxs!daw
*
* merged D. Wolverton's ANSI C version w/ ????'s version
* added function prototypes
* added C++ declarations
* made type combination checking table driven
* added checks for void variable combinations
* made 'create program' feature a runtime option
* added file parsing as well as just stdin
* added help message at beginning
* added prompts when on a TTY or in interactive mode
* added getopt() usage
* added -a, -r, -p, -c, -d, -D, -V, -i and -+ options
* delinted
* added #defines for those without getopt or void
* added 'set options' command
* added 'quit/exit' command
* added synonyms
* Tony Hansen
* attmail!tony, ihnp4!pegasus!hansen
*
* added extern, register, static
* added links to explain, cast, declare
* separately developed ANSI C support
* Merlyn LeRoy
* merlyn@rose3.rosemount.com
*
* merged versions from LeRoy
* added tmpfile() support
* allow more parts to be missing during explanations
* Tony Hansen
* attmail!tony, ihnp4!pegasus!hansen
*
* added GNU readline() support
* added dotmpfile_from_string() to support readline()
* outdented C help text to prevent line from wrapping
* minor tweaking of makefile && mv makefile Makefile
* took out interactive and nointeractive commands when
* compiled with readline support
* added prompt and noprompt commands, -q option
* Dave Conrad
* conrad@detroit.freenet.org
*
* added support for Apple's "blocks"
* Peter Ammon
* cdecl@ridiculousfish.com
*/
char cdeclsccsid[] = "@(#)cdecl.c 2.5 1/15/96";
int yylex(void);
#ifdef __EMSCRIPTEN__
static int isatty(int fd) {
(void)fd;
return 0;
}
static int fileno(void *file) {
(void)file;
return 0;
}
#endif
#include <ctype.h>
#include <stdio.h>
#if __STDC__ || defined(DOS)
#include <errno.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#else
#ifndef NOVARARGS
#include <varargs.h>
#endif /* ndef NOVARARGS */
char *malloc();
void free(), exit(), perror();
#ifdef BSD
#include <strings.h>
extern int errno;
#define strrchr rindex
#define NOTMPFILE
#else
#include <errno.h>
#include <string.h>
#endif /* BSD */
#ifdef NOVOID
#define void int
#endif /* NOVOID */
#endif /* __STDC__ || DOS */
#ifdef USE_READLINE
#include <readline/readline.h>
/* prototypes for functions related to readline() */
char *getline();
char **attempt_completion(char *, int, int);
char *keyword_completion(char *, int);
char *command_completion(char *, int);
#endif
/* maximum # of chars from progname to display in prompt */
#define MAX_NAME 32
/* this is the prompt for readline() to display */
char cdecl_prompt[MAX_NAME + 3];
/* backup copy of prompt to save it while prompting is off */
char real_prompt[MAX_NAME + 3];
#define MB_SHORT 0001
#define MB_LONG 0002
#define MB_UNSIGNED 0004
#define MB_INT 0010
#define MB_CHAR 0020
#define MB_FLOAT 0040
#define MB_DOUBLE 0100
#define MB_VOID 0200
#define MB_SIGNED 0400
#define NullCP ((char *)NULL)
#ifdef dodebug
#define Debug(x) \
do { \
if (DebugFlag) \
(void)fprintf x; \
} while (0)
#else
#define Debug(x) /* nothing */
#endif
#if __STDC__
char *ds(char *), *cat(char *, ...), *visible(int);
int main(int, char **);
int yywrap(void);
int dostdin(void);
void mbcheck(void), dohelp(void), usage(void);
void prompt(void), doprompt(void), noprompt(void);
void unsupp(char *, char *);
void notsupported(char *, char *, char *);
void yyerror(char *);
void doset(char *);
void dodeclare(char *, char *, char *, char *, char *);
void docast(char *, char *, char *, char *);
void dodexplain(char *, char *, char *, char *, char *);
void docexplain(char *, char *, char *, char *);
void cdecl_setprogname(char *);
int dotmpfile(int, char **), dofileargs(int, char **);
#else
char *ds(), *cat(), *visible();
int getopt();
void mbcheck(), dohelp(), usage();
void prompt(), doprompt(), noprompt();
void unsupp(), notsupported();
void yyerror();
void doset(), dodeclare(), docast(), dodexplain(), docexplain();
void cdecl_setprogname();
int dotmpfile(), dofileargs();
#endif /* __STDC__ */
FILE *tmpfile();
/* variables used during parsing */
unsigned modbits = 0;
int arbdims = 1;
char *savedname = 0;
char unknown_name[] = "unknown_name";
char prev = 0; /* the current type of the variable being examined */
/* values type */
/* p pointer */
/* r reference */
/* f function */
/* a array (of arbitrary dimensions) */
/* A array with dimensions */
/* n name */
/* v void */
/* s struct | class */
/* t simple type (int, long, etc.) */
/* options */
int RitchieFlag = 0; /* -r, assume Ritchie PDP C language */
int MkProgramFlag = 0; /* -c, output {} and ; after declarations */
int PreANSIFlag = 0; /* -p, assume pre-ANSI C language */
int CplusplusFlag = 0; /* -+, assume C++ language */
int OnATty = 0; /* stdin is coming from a terminal */
int Interactive = 0; /* -i, overrides OnATty */
int KeywordName = 0; /* $0 is a keyword (declare, explain, cast) */
char *progname = "cdecl"; /* $0 */
int quiet = 0; /* -q, quiets prompt and initial help msg */
#if dodebug
int DebugFlag = 0; /* -d, output debugging trace info */
#endif
#ifdef doyydebug /* compile in yacc trace statements */
#define YYDEBUG 1
#endif /* doyydebug */
#include "cdgram.c"
#include "cdlex.c"
/* definitions (and abbreviations) for type combinations cross check table */
#define ALWAYS 0 /* combo always okay */
#define _ ALWAYS
#define NEVER 1 /* combo never allowed */
#define X NEVER
#define RITCHIE 2 /* combo not allowed in Ritchie compiler */
#define R RITCHIE
#define PREANSI 3 /* combo not allowed in Pre-ANSI compiler */
#define P PREANSI
#define ANSI 4 /* combo not allowed anymore in ANSI compiler */
#define A ANSI
/* This is an lower left triangular array. If we needed */
/* to save 9 bytes, the "long" row can be removed. */
char crosscheck[9][9] = {
/* L, I, S, C, V, U, S, F, D, */
/* long */ _, _, _, _, _, _, _, _, _,
/* int */ _, _, _, _, _, _, _, _, _,
/* short */ X, _, _, _, _, _, _, _, _,
/* char */ X, X, X, _, _, _, _, _, _,
/* void */ X, X, X, X, _, _, _, _, _,
/* unsigned */ R, _, R, R, X, _, _, _, _,
/* signed */ P, P, P, P, X, X, _, _, _,
/* float */ A, X, X, X, X, X, X, _, _,
/* double */ P, X, X, X, X, X, X, X, _};
/* the names and bits checked for each row in the above array */
struct {
char *name;
int bit;
} crosstypes[9] = {
{"long", MB_LONG}, {"int", MB_INT}, {"short", MB_SHORT},
{"char", MB_CHAR}, {"void", MB_VOID}, {"unsigned", MB_UNSIGNED},
{"signed", MB_SIGNED}, {"float", MB_FLOAT}, {"double", MB_DOUBLE}};
/* Run through the crosscheck array looking */
/* for unsupported combinations of types. */
void mbcheck() {
register int i, j, restriction;
char *t1, *t2;
/* Loop through the types */
/* (skip the "long" row) */
for (i = 1; i < 9; i++) {
/* if this type is in use */
if ((modbits & crosstypes[i].bit) != 0) {
/* check for other types also in use */
for (j = 0; j < i; j++) {
/* this type is not in use */
if (!(modbits & crosstypes[j].bit))
continue;
/* check the type of restriction */
restriction = crosscheck[i][j];
if (restriction == ALWAYS)
continue;
t1 = crosstypes[i].name;
t2 = crosstypes[j].name;
if (restriction == NEVER) {
notsupported("", t1, t2);
} else if (restriction == RITCHIE) {
if (RitchieFlag)
notsupported(" (Ritchie Compiler)", t1, t2);
} else if (restriction == PREANSI) {
if (PreANSIFlag || RitchieFlag)
notsupported(" (Pre-ANSI Compiler)", t1, t2);
} else if (restriction == ANSI) {
if (!RitchieFlag && !PreANSIFlag)
notsupported(" (ANSI Compiler)", t1, t2);
} else {
(void)fprintf(stderr, "%s: Internal error in crosscheck[%d,%d]=%d!\n",
progname, i, j, restriction);
exit(1); /* NOTREACHED */
}
}
}
}
}
/* undefine these as they are no longer needed */
#undef _
#undef ALWAYS
#undef X
#undef NEVER
#undef R
#undef RITCHIE
#undef P
#undef PREANSI
#undef A
#undef ANSI
#ifdef USE_READLINE
/* this section contains functions and declarations used with readline() */
/* the readline info pages make this clearer than any comments possibly
* could, so see them for more information
*/
char *commands[] = {"declare", "explain", "cast", "help",
"set", "exit", "quit", NULL};
char *keywords[] = {"function", "returning", "array", "pointer", "reference",
"member", "const", "volatile", "noalias", "struct",
"union", "enum", "class", "extern", "static",
"auto", "register", "short", "long", "signed",
"unsigned", "char", "float", "double", "void",
NULL};
char *options[] = {"options", "create", "nocreate", "prompt", "noprompt",
#if 0
"interactive",
"nointeractive",
#endif
"ritchie", "preansi", "ansi", "cplusplus", NULL};
/* A static variable for holding the line. */
static char *line_read = NULL;
/* Read a string, and return a pointer to it. Returns NULL on EOF. */
char *getline() {
/* If the buffer has already been allocated, return the memory
to the free pool. */
if (line_read != NULL) {
free(line_read);
line_read = NULL;
}
/* Get a line from the user. */
line_read = readline(cdecl_prompt);
/* If the line has any text in it, save it on the history. */
if (line_read && *line_read)
add_history(line_read);
return (line_read);
}
char **attempt_completion(char *text, int start, int end) {
char **matches = NULL;
if (start == 0)
matches = completion_matches(text, command_completion);
return matches;
}
char *command_completion(char *text, int flag) {
static int index, len;
char *command;
if (!flag) {
index = 0;
len = strlen(text);
}
while (command = commands[index]) {
index++;
if (!strncmp(command, text, len))
return strdup(command);
}
return NULL;
}
char *keyword_completion(char *text, int flag) {
static int index, len, set, into;
char *keyword, *option;
if (!flag) {
index = 0;
len = strlen(text);
/* completion works differently if the line begins with "set" */
set = !strncmp(rl_line_buffer, "set", 3);
into = 0;
}
if (set) {
while (option = options[index]) {
index++;
if (!strncmp(option, text, len))
return strdup(option);
}
} else {
/* handle "int" and "into" as special cases */
if (!into) {
into = 1;
if (!strncmp(text, "into", len) && strncmp(text, "int", len))
return strdup("into");
if (strncmp(text, "int", len))
return keyword_completion(text, into);
/* normally "int" and "into" would conflict with one another when
* completing; cdecl tries to guess which one you wanted, and it
* always guesses correctly
*/
if (!strncmp(rl_line_buffer, "cast", 4) &&
!strstr(rl_line_buffer, "into"))
return strdup("into");
else
return strdup("int");
} else
while (keyword = keywords[index]) {
index++;
if (!strncmp(keyword, text, len))
return strdup(keyword);
}
}
return NULL;
}
#endif /* USE_READLINE */
/* Write out a message about something */
/* being unsupported, possibly with a hint. */
void unsupp(s, hint) char *s, *hint;
{
notsupported("", s, NullCP);
if (hint)
(void)fprintf(stderr, "\t(maybe you mean \"%s\")\n", hint);
}
/* Write out a message about something */
/* being unsupported on a particular compiler. */
void notsupported(compiler, type1, type2) char *compiler, *type1, *type2;
{
fflush(stdout);
if (type2)
(void)fprintf(stderr, "Warning: Unsupported in%s C%s -- '%s' with '%s'\n",
compiler, CplusplusFlag ? "++" : "", type1, type2);
else
(void)fprintf(stderr, "Warning: Unsupported in%s C%s -- '%s'\n", compiler,
CplusplusFlag ? "++" : "", type1);
}
/* Called by the yacc grammar */
void yyerror(s) char *s;
{
(void)printf("%s\n", s);
Debug((stdout, "yychar=%d\n", yychar));
}
/* Called by the yacc grammar */
int yywrap() { return 1; }
/*
* Support for dynamic strings:
* cat() creates a string from the concatenation
* of a null terminated list of input strings.
* The input strings are free()'d by cat()
* (so they better have been malloc()'d).
*
* the different methods of <stdarg.h> and
* <vararg.h> are handled within these macros
*/
#if __STDC__
#define VA_DCL(type, var) (type var, ...)
#define VA_START(list, var, type) ((va_start(list, var)), (var))
#else
#if defined(DOS)
#define VA_DCL(type, var) (var, ...) type var;
#define VA_START(list, var, type) ((va_start(list, var)), (var))
#else
#ifndef NOVARARGS
#define VA_DCL(type, var) (va_alist) va_dcl
#define VA_START(list, var, type) ((va_start(list)), va_arg(list, type))
#else
/*
* it is assumed here that machines which don't have either
* <varargs.h> or <stdarg.h> will put its arguments on
* the stack in the "usual" way and consequently can grab
* the arguments using the "take the address of the first
* parameter and increment by sizeof" trick.
*/
#define VA_DCL(type, var) (var) type var;
#define VA_START(list, var, type) (list = (va_list) & (var), (var))
#define va_arg(list, type) ((type *)(list += sizeof(type)))[-1]
#define va_end(p) /* nothing */
typedef char *va_list;
#endif /* NOVARARGS */
#endif /* DOS */
#endif /* __STDC__ */
/* VARARGS */
char *cat VA_DCL(char *, s1) {
register char *newstr;
register unsigned len = 1;
char *str;
va_list args;
/* find the length which needs to be allocated */
str = VA_START(args, s1, char *);
for (; str; str = va_arg(args, char *))
len += strlen(str);
va_end(args);
/* allocate it */
newstr = malloc(len);
if (newstr == 0) {
(void)fprintf(stderr, "%s: out of malloc space within cat()!\n", progname);
exit(1);
}
newstr[0] = '\0';
/* copy in the strings */
str = VA_START(args, s1, char *);
for (; str; str = va_arg(args, char *)) {
(void)strcat(newstr, str);
free(str);
}
va_end(args);
Debug((stderr, "\tcat created '%s'\n", newstr));
return newstr;
}
/*
* ds() makes a malloc()'d string from one that's not.
*/
char *ds(s)
char *s;
{
register char *p = malloc((unsigned)(strlen(s) + 1));
if (p)
(void)strcpy(p, s);
else {
(void)fprintf(stderr, "%s: malloc() failed!\n", progname);
exit(1);
}
return p;
}
/* return a visible representation of a character */
char *visible(c)
int c;
{
static char buf[5];
c &= 0377;
if (isprint(c)) {
buf[0] = c;
buf[1] = '\0';
} else
(void)sprintf(buf, "\\%03o", c);
return buf;
}
#ifdef NOTMPFILE
/* provide a conservative version of tmpfile() */
/* for those systems without it. */
/* tmpfile() returns a FILE* of a file opened */
/* for read&write. It is supposed to be */
/* automatically removed when it gets closed, */
/* but here we provide a separate rmtmpfile() */
/* function to perform that function. */
/* Also provide several possible file names to */
/* try for opening. */
static char *file4tmpfile = 0;
FILE *tmpfile() {
static char *listtmpfiles[] = {"/usr/tmp/cdeclXXXXXX", "/tmp/cdeclXXXXXX",
"/cdeclXXXXXX", "cdeclXXXXXX", 0};
char **listp = listtmpfiles;
for (; *listp; listp++) {
FILE *retfp;
(void)mktemp(*listp);
retfp = fopen(*listp, "w+");
if (!retfp)
continue;
file4tmpfile = *listp;
return retfp;
}
return 0;
}
void rmtmpfile() {
if (file4tmpfile)
(void)unlink(file4tmpfile);
}
#else
/* provide a mock rmtmpfile() for normal systems */
#define rmtmpfile() /* nothing */
#endif /* NOTMPFILE */
#ifndef NOGETOPT
extern int optind;
#else
/* This is a miniature version of getopt() which will */
/* do just barely enough for us to get by below. */
/* Options are not allowed to be bunched up together. */
/* Option arguments are not supported. */
int optind = 1;
int getopt(argc, argv, optstring)
char **argv;
char *optstring;
{
int ret;
char *p;
if ((argv[optind][0] != '-')
#ifdef DOS
&& (argv[optind][0] != '/')
#endif /* DOS */
)
return EOF;
ret = argv[optind][1];
optind++;
for (p = optstring; *p; p++)
if (*p == ret)
return ret;
(void)fprintf(stderr, "%s: illegal option -- %s\n", progname, visible(ret));
return '?';
}
#endif
/* the help messages */
struct helpstruct {
char *text; /* generic text */
char *cpptext; /* C++ specific text */
} helptext[] =
{/* up-to 23 lines of help text so it fits on (24x80) screens */
/* 1 */ {
"[] means optional; {} means 1 or more; <> means defined elsewhere",
0},
/* 2 */ {" commands are separated by ';' and newlines", 0},
/* 3 */ {"command:", 0},
/* 4 */ {" declare <name> as <english>", 0},
/* 5 */ {" cast <name> into <english>", 0},
/* 6 */ {" explain <gibberish>", 0},
/* 7 */ {" set or set options", 0},
/* 8 */ {" help, ?", 0},
/* 9 */ {" quit or exit", 0},
/* 10 */ {"english:", 0},
/* 11 */ {" function [( <decl-list> )] returning <english>", 0},
/* 12 */ {" block [( <decl-list> )] returning <english>", 0},
/* 13 */ {" array [<number>] of <english>", 0},
/* 14 */
{" [{ const | volatile | noalias }] pointer to <english>",
" [{const|volatile}] {pointer|reference} to [member of class <name>] "
"<english>"},
/* 15 */ {" <type>", 0},
/* 16 */ {"type:", 0},
/* 17 */ {" {[<storage-class>] [{<modifier>}] [<C-type>]}", 0},
/* 18 */
{" { struct | union | enum } <name>",
" {struct|class|union|enum} <name>"},
/* 19 */
{"decllist: a comma separated list of <name>, <english> or <name> as "
"<english>",
0},
/* 20 */ {"name: a C identifier", 0},
/* 21 */
{"gibberish: a C declaration, like 'int *x', or cast, like '(int *)x'", 0},
/* 22 */ {"storage-class: extern, static, auto, register", 0},
/* 23 */ {"C-type: int, char, float, double, or void", 0},
/* 24 */
{"modifier: short, long, signed, unsigned, const, volatile, or noalias",
"modifier: short, long, signed, unsigned, const, or volatile"},
{0, 0}};
/* Print out the help text */
void dohelp() {
register struct helpstruct *p;
register char *fmt = CplusplusFlag ? " %s\n" : " %s\n";
for (p = helptext; p->text; p++)
if (CplusplusFlag && p->cpptext)
(void)printf(fmt, p->cpptext);
else
(void)printf(fmt, p->text);
}
/* Tell how to invoke cdecl. */
void usage() {
(void)fprintf(stderr, "Usage: %s [-r|-p|-a|-+] [-ciq%s%s] [files...]\n",
progname,
#ifdef dodebug
"d",
#else
"",
#endif /* dodebug */
#ifdef doyydebug
"D"
#else
""
#endif /* doyydebug */
);
(void)fprintf(stderr, "\t-r Check against Ritchie PDP C Compiler\n");
(void)fprintf(stderr, "\t-p Check against Pre-ANSI C Compiler\n");
(void)fprintf(stderr, "\t-a Check against ANSI C Compiler%s\n",
CplusplusFlag ? "" : " (the default)");
(void)fprintf(stderr, "\t-+ Check against C++ Compiler%s\n",
CplusplusFlag ? " (the default)" : "");
(void)fprintf(stderr, "\t-c Create compilable output (include ; and {})\n");
(void)fprintf(stderr, "\t-i Force interactive mode\n");
(void)fprintf(stderr, "\t-q Quiet prompt\n");
#ifdef dodebug
(void)fprintf(stderr, "\t-d Turn on debugging mode\n");
#endif /* dodebug */
#ifdef doyydebug
(void)fprintf(stderr, "\t-D Turn on YACC debugging mode\n");
#endif /* doyydebug */
exit(1);
/* NOTREACHED */
}
/* Manage the prompts. */
static int prompting;
void doprompt() { prompting = 1; }
void noprompt() { prompting = 0; }
void prompt() {
#ifndef USE_READLINE
if ((OnATty || Interactive) && prompting) {
(void)printf("%s", cdecl_prompt);
#if 0
(void) printf("%s> ", progname);
#endif /* that was the old way to display the prompt */
(void)fflush(stdout);
}
#endif
}
/* Save away the name of the program from argv[0] */
void cdecl_setprogname(char *argv0) {
#ifdef DOS
char *dot;
#endif /* DOS */
progname = strrchr(argv0, '/');
#ifdef DOS
if (!progname)
progname = strrchr(argv0, '\\');
#endif /* DOS */
if (progname)
progname++;
else
progname = argv0;
#ifdef DOS
dot = strchr(progname, '.');
if (dot)
*dot = '\0';
for (dot = progname; *dot; dot++)
*dot = tolower(*dot);
#endif /* DOS */
/* this sets up the prompt, which is on by default */
{
int len;
len = strlen(progname);
if (len > MAX_NAME)
len = MAX_NAME;
strncpy(real_prompt, progname, len);
real_prompt[len] = '>';
real_prompt[len + 1] = ' ';
real_prompt[len + 2] = '\0';
}
}
/* Run down the list of keywords to see if the */
/* program is being called named as one of them */
/* or the first argument is one of them. */
int namedkeyword(argn)
char *argn;
{
static char *cmdlist[] = {"explain", "declare", "cast", "help",
"?", "set", 0};
/* first check the program name */
char **cmdptr = cmdlist;
for (; *cmdptr; cmdptr++)
if (strcmp(*cmdptr, progname) == 0) {
KeywordName = 1;
return 1;
}
/* now check $1 */
for (cmdptr = cmdlist; *cmdptr; cmdptr++)
if (strcmp(*cmdptr, argn) == 0)
return 1;
/* nope, must be file name arguments */
return 0;
}
/* Read from standard input, turning */
/* on prompting if necessary. */
int dostdin() {
int ret;
if (OnATty || Interactive) {
#ifndef USE_READLINE
if (!quiet)
(void)printf("Type `help' or `?' for help\n");
prompt();
#else
char *line, *oldline;
int len, newline;
if (!quiet)
(void)printf("Type `help' or `?' for help\n");
ret = 0;
while ((line = getline())) {
if (!strcmp(line, "quit") || !strcmp(line, "exit")) {
free(line);
return ret;
}
newline = 0;
/* readline() strips newline, we add semicolon if necessary */
len = strlen(line);
if (len && line[len - 1] != '\n' && line[len - 1] != ';') {
newline = 1;
oldline = line;
line = malloc(len + 2);
strcpy(line, oldline);
line[len] = ';';
line[len + 1] = '\0';
}
if (len)
ret = dotmpfile_from_string(line);
if (newline)
free(line);
}
puts("");
return ret;
#endif
}
yyin = stdin;
ret = yyparse();
OnATty = 0;
return ret;
}
/* Write a string into a file and treat that file as the input. */
int dotmpfile_from_string(s) const char *s;
{
int ret = 0;
FILE *tmpfp = tmpfile();
if (!tmpfp) {
int sverrno = errno;
(void)fprintf(stderr, "%s: cannot open temp file\n", progname);
errno = sverrno;
perror(progname);
return 1;
}
if (fputs(s, tmpfp) == EOF) {
int sverrno;
sverrno = errno;
(void)fprintf(stderr, "%s: error writing to temp file\n", progname);
errno = sverrno;
perror(progname);
(void)fclose(tmpfp);
rmtmpfile();
return 1;
}
rewind(tmpfp);
yyin = tmpfp;
ret += yyparse();
(void)fclose(tmpfp);
rmtmpfile();
return ret;
}
/* Write the arguments into a file */
/* and treat that file as the input. */
int dotmpfile(argc, argv)
int argc;
char **argv;
{
int ret = 0;
FILE *tmpfp = tmpfile();
if (!tmpfp) {
int sverrno = errno;
(void)fprintf(stderr, "%s: cannot open temp file\n", progname);
errno = sverrno;
perror(progname);
return 1;
}
if (KeywordName)
if (fputs(progname, tmpfp) == EOF) {
int sverrno;
errwrite:
sverrno = errno;
(void)fprintf(stderr, "%s: error writing to temp file\n", progname);
errno = sverrno;
perror(progname);
(void)fclose(tmpfp);
rmtmpfile();
return 1;
}
for (; optind < argc; optind++)
if (fprintf(tmpfp, " %s", argv[optind]) == EOF)
goto errwrite;
if (putc('\n', tmpfp) == EOF)
goto errwrite;
rewind(tmpfp);
yyin = tmpfp;
ret += yyparse();
(void)fclose(tmpfp);
rmtmpfile();
return ret;
}
/* Read each of the named files for input. */
int dofileargs(argc, argv)
int argc;
char **argv;
{
FILE *ifp;
int ret = 0;
for (; optind < argc; optind++)
if (strcmp(argv[optind], "-") == 0)
ret += dostdin();
else if ((ifp = fopen(argv[optind], "r")) == NULL) {
int sverrno = errno;
(void)fprintf(stderr, "%s: cannot open %s\n", progname, argv[optind]);
errno = sverrno;
perror(argv[optind]);
ret++;
}
else {
yyin = ifp;
ret += yyparse();
}
return ret;
}
/* print out a cast */
void docast(name, left, right, type) char *name, *left, *right, *type;
{
int lenl = strlen(left), lenr = strlen(right);
if (prev == 'f')
unsupp("Cast into function", "cast into pointer to function");
else if (prev == 'A' || prev == 'a')
unsupp("Cast into array", "cast into pointer");
(void)printf("(%s%*s%s)%s\n", type, lenl + lenr ? lenl + 1 : 0, left, right,
name ? name : "expression");
free(left);
free(right);
free(type);
if (name)
free(name);
}
/* print out a declaration */
void dodeclare(name, storage, left, right, type) char *name, *storage, *left,
*right, *type;
{
if (prev == 'v')
unsupp("Variable of type void", "variable of type pointer to void");
if (*storage == 'r')
switch (prev) {
case 'f':
unsupp("Register function", NullCP);
break;
case 'A':
case 'a':
unsupp("Register array", NullCP);
break;
case 's':
unsupp("Register struct/class", NullCP);
break;
}