ref: a1c3c34c70431447a89fbe08c3475dbfaee7b672
dir: /sys/src/cmd/rc/rc.h/
/* * Plan9 is defined for plan 9 * otherwise its UNIX. * Please don't litter the code with ifdefs. The three below (and one in * getflags) should be enough. */ #ifdef Plan9 #include <u.h> #include <libc.h> #define NSIG 32 #define SIGINT 2 #define SIGQUIT 3 #else #include <stdlib.h> #include <stdarg.h> #include <unistd.h> #include <string.h> #include <signal.h> #ifndef NSIG #define NSIG 32 #endif #endif #define YYMAXDEPTH 500 #ifndef PAREN #include "y.tab.h" #endif typedef struct tree tree; typedef struct word word; typedef struct io io; typedef union code code; typedef struct var var; typedef struct list list; typedef struct lexer lexer; typedef struct redir redir; typedef struct thread thread; typedef struct builtin builtin; #pragma incomplete word #pragma incomplete io struct tree{ int type; int rtype, fd0, fd1; /* details of REDIR PIPE DUP tokens */ int line; char glob; /* 0=string, 1=glob, 2=pattern see globprop() and noglobs() */ char quoted; char iskw; char *str; tree *child[3]; tree *next; }; tree *newtree(void); tree *token(char*, int), *klook(char*), *tree1(int, tree*); tree *tree2(int, tree*, tree*), *tree3(int, tree*, tree*, tree*); tree *mung1(tree*, tree*), *mung2(tree*, tree*, tree*); tree *mung3(tree*, tree*, tree*, tree*), *epimung(tree*, tree*); tree *simplemung(tree*); tree *globprop(tree*); char *fnstr(tree*); /* * The first word of any code vector is a reference count * and the second word is a string for srcfile(). * Code starts at pc 2. The last code word must be a zero * terminator for codefree(). * Always create a new reference to a code vector by calling codecopy(.). * Always call codefree(.) when deleting a reference. */ union code{ void (*f)(void); int i; char *s; }; #define NTOK 8192 struct lexer{ io *input; char *file; int line; char *prolog; char *epilog; int peekc; int future; int lastc; char eof; char inquote; char incomm; char lastword; /* was the last token read a word or compound word terminator? */ char lastdol; /* was the last token read '$' or '$#' or '"'? */ char iflast; /* static `if not' checking */ char qflag; char tok[NTOK]; }; extern lexer *lex; /* current lexer */ lexer *newlexer(io*, char*); void freelexer(lexer*); #define APPEND 1 #define WRITE 2 #define READ 3 #define HERE 4 #define DUPFD 5 #define CLOSE 6 #define RDWR 7 struct var{ var *next; /* next on hash or local list */ word *val; /* value */ code *fn; /* pointer to function's code vector */ int pc; /* pc of start of function */ char fnchanged; char changed; char name[]; }; var *vlook(char*), *gvlook(char*), *newvar(char*, var*); void setvar(char*, word*), freevar(var*); #define NVAR 521 extern var *gvar[NVAR]; /* hash for globals */ #define new(type) ((type *)emalloc(sizeof(type))) void *emalloc(long); void *erealloc(void *, long); char *estrdup(char*); /* * Glob character escape in strings: * In a string, GLOB must be followed by *?[ or GLOB. * GLOB* matches any string * GLOB? matches any single character * GLOB[...] matches anything in the brackets * GLOBGLOB matches GLOB */ #define GLOB ((char)0x01) /* * Is c the first character of a utf sequence? */ #define onebyte(c) (((c)&0x80)==0x00) #define twobyte(c) (((c)&0xe0)==0xc0) #define threebyte(c) (((c)&0xf0)==0xe0) #define fourbyte(c) (((c)&0xf8)==0xf0) #define xbyte(c) (((c)&0xc0)==0x80) extern char *argv0; extern int nerror; /* number of errors encountered during compilation */ extern int doprompt; /* is it time for a prompt? */ extern io *err; /* * Which fds are the reading/writing end of a pipe? * Unfortunately, this can vary from system to system. * 9th edition Unix doesn't care, the following defines * work on plan 9. */ #define PRD 0 #define PWR 1 extern char Rcmain[], Fdprefix[]; extern char *Signame[];