add directory study
This commit is contained in:
gohigh
224
study/linux-travel/MINIX-1.5/1.5/Source/commands/bawk/bawk.h
Normal file
224
study/linux-travel/MINIX-1.5/1.5/Source/commands/bawk/bawk.h
Normal file
@@ -0,0 +1,224 @@
|
||||
/*
|
||||
* Bawk constants and variable declarations.
|
||||
*/
|
||||
#ifdef MAIN
|
||||
# define EXTERN
|
||||
#else
|
||||
# define EXTERN extern
|
||||
#endif
|
||||
|
||||
#include <minix/config.h>
|
||||
#if (CHIP == M68000)
|
||||
# define INT long
|
||||
# define ALIGN(p) (((long)(p) & 1) ? ++(p) : (p) )
|
||||
#else
|
||||
# define INT int
|
||||
# define ALIGN(p) (p)
|
||||
#endif
|
||||
|
||||
/*#define DEBUG 1 remove this line to compile without debug statements */
|
||||
#ifdef DEBUG
|
||||
EXTERN char Debug; /* debug print flag */
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Table and buffer sizes
|
||||
*/
|
||||
#define MAXLINELEN 128 /* longest input line */
|
||||
#define MAXWORDS (MAXLINELEN/2) /* max # of words in a line */
|
||||
#define MAXWORKBUFLEN 4096 /* longest action or regular expression */
|
||||
#define MAXVARTABSZ 50 /* max # of symbols */
|
||||
#define MAXVARLEN 10 /* symbol name length */
|
||||
#define MAXSTACKSZ 40 /* max value stack length (for expressions) */
|
||||
|
||||
|
||||
/**********************************************************
|
||||
* Current Input File variables *
|
||||
**********************************************************/
|
||||
/*
|
||||
* Current Input File pointer:
|
||||
*/
|
||||
EXTERN FILE *Fileptr;
|
||||
EXTERN char *Filename; /* current input file name */
|
||||
EXTERN char *Filechar; /* ptr to next input char if input is string */
|
||||
EXTERN int Linecount; /* current input line number */
|
||||
EXTERN int Recordcount; /* record count */
|
||||
/*
|
||||
* Working buffers.
|
||||
*/
|
||||
EXTERN char Linebuf[ MAXLINELEN ]; /* current input line buffer */
|
||||
EXTERN char *Fields[ MAXWORDS ]; /* pointers to the words in Linebuf */
|
||||
EXTERN int Fieldcount; /* and the # of words */
|
||||
EXTERN char Workbuf[ MAXWORKBUFLEN ]; /* work area for C action and */
|
||||
/* regular expression parsers */
|
||||
|
||||
/**********************************************************
|
||||
* Regular Expression Parser variables *
|
||||
**********************************************************/
|
||||
/*
|
||||
* Tokens:
|
||||
*/
|
||||
#define CHAR 1
|
||||
#define BOL 2
|
||||
#define EOL 3
|
||||
#define ANY 4
|
||||
#define CLASS 5
|
||||
#define NCLASS 6
|
||||
#define STAR 7
|
||||
#define PLUS 8
|
||||
#define MINUS 9
|
||||
#define ALPHA 10
|
||||
#define DIGIT 11
|
||||
#define NALPHA 12
|
||||
#define PUNCT 13
|
||||
#define RANGE 14
|
||||
#define ENDPAT 15
|
||||
|
||||
|
||||
/**********************************************************
|
||||
* C Actions Interpreter variables *
|
||||
**********************************************************/
|
||||
/*
|
||||
* Tokens:
|
||||
*/
|
||||
#define T_STRING 'S' /* primaries: */
|
||||
#define T_DOLLAR '$'
|
||||
#define T_REGEXP 'r'
|
||||
#define T_CONSTANT 'C'
|
||||
#define T_VARIABLE 'V'
|
||||
#define T_FUNCTION 'F'
|
||||
#define T_SEMICOLON ';' /* punctuation */
|
||||
#define T_EOF 'Z'
|
||||
#define T_LBRACE '{'
|
||||
#define T_RBRACE '}'
|
||||
#define T_LPAREN '('
|
||||
#define T_RPAREN ')'
|
||||
#define T_LBRACKET '['
|
||||
#define T_RBRACKET ']'
|
||||
#define T_COMMA ','
|
||||
#define T_ASSIGN '=' /* operators: */
|
||||
#define T_MUL '*'
|
||||
#define T_DIV '/'
|
||||
#define T_MOD '%'
|
||||
#define T_ADD '+'
|
||||
#define T_SUB '-'
|
||||
#define T_SHL 'L'
|
||||
#define T_SHR 'R'
|
||||
#define T_LT '<'
|
||||
#define T_LE 'l'
|
||||
#define T_GT '>'
|
||||
#define T_GE 'g'
|
||||
#define T_EQ 'q'
|
||||
#define T_NE 'n'
|
||||
#define T_NOT '~'
|
||||
#define T_AND '&'
|
||||
#define T_XOR '^'
|
||||
#define T_IOR '|'
|
||||
#define T_LNOT '!'
|
||||
#define T_LAND 'a'
|
||||
#define T_LIOR 'o'
|
||||
#define T_INCR 'p'
|
||||
#define T_DECR 'm'
|
||||
#define T_IF 'i' /* keywords: */
|
||||
#define T_ELSE 'e'
|
||||
#define T_WHILE 'w'
|
||||
#define T_BREAK 'b'
|
||||
#define T_CHAR 'c'
|
||||
#define T_INT 't'
|
||||
#define T_BEGIN 'B'
|
||||
#define T_END 'E'
|
||||
#define T_NF 'f'
|
||||
#define T_NR '#'
|
||||
#define T_FS ' '
|
||||
#define T_RS '\n'
|
||||
#define T_FILENAME 'z'
|
||||
|
||||
#define PATTERN 'P' /* indicates C statement is within a pattern */
|
||||
#define ACTION 'A' /* indicates C statement is within an action */
|
||||
|
||||
/*
|
||||
* Symbol Table values
|
||||
*/
|
||||
#define ACTUAL 0
|
||||
#define LVALUE 1
|
||||
#define BYTE 1
|
||||
#define WORD sizeof(INT) /* ugh ! */
|
||||
/*
|
||||
* Symbol table
|
||||
*/
|
||||
struct variable {
|
||||
char vname[ MAXVARLEN ];
|
||||
char vclass;
|
||||
char vsize;
|
||||
int vlen;
|
||||
char *vptr;
|
||||
};
|
||||
#define VARIABLE struct variable
|
||||
EXTERN VARIABLE Vartab[ MAXVARTABSZ ], *Nextvar;
|
||||
/*
|
||||
* Value stack
|
||||
*/
|
||||
union datum {
|
||||
INT ival;
|
||||
char *dptr;
|
||||
char **ptrptr;
|
||||
};
|
||||
#define DATUM union datum
|
||||
struct item {
|
||||
char class;
|
||||
char lvalue;
|
||||
char size;
|
||||
DATUM value;
|
||||
};
|
||||
#define ITEM struct item
|
||||
EXTERN ITEM Stackbtm[ MAXSTACKSZ ], *Stackptr, *Stacktop;
|
||||
/*
|
||||
* Miscellaneous
|
||||
*/
|
||||
EXTERN char *Actptr; /* pointer into Workbuf during compilation */
|
||||
EXTERN char Token; /* current input token */
|
||||
EXTERN DATUM Value; /* and its value */
|
||||
EXTERN char Saw_break; /* set when break stmt seen */
|
||||
EXTERN char Where; /* indicates whether C stmt is a PATTERN or ACTION */
|
||||
EXTERN char Fieldsep[20]; /* field seperator */
|
||||
EXTERN char Recordsep[20]; /* record seperator */
|
||||
EXTERN char *Beginact; /* BEGINning of input actions */
|
||||
EXTERN char *Endact; /* END of input actions */
|
||||
|
||||
/**********************************************************
|
||||
* Rules structure *
|
||||
**********************************************************/
|
||||
struct rule {
|
||||
struct {
|
||||
char *start; /* C statements that match pattern start */
|
||||
char *stop; /* C statements that match pattern end */
|
||||
char startseen; /* set if both a start and stop pattern */
|
||||
/* given and if an input line matched the */
|
||||
/* start pattern */
|
||||
} pattern;
|
||||
char *action; /* contains quasi-C statements of actions */
|
||||
struct rule *nextrule; /* pointer to next rule */
|
||||
};
|
||||
#define RULE struct rule
|
||||
EXTERN RULE *Rules, /* rule structures linked list head */
|
||||
*Rulep; /* working pointer */
|
||||
|
||||
|
||||
/**********************************************************
|
||||
* Miscellaneous *
|
||||
**********************************************************/
|
||||
/*
|
||||
* Error exit values (returned to command shell)
|
||||
*/
|
||||
#define USAGE_ERROR 1 /* error in invokation */
|
||||
#define FILE_ERROR 2 /* file not found errors */
|
||||
#define RE_ERROR 3 /* bad regular expression */
|
||||
#define ACT_ERROR 4 /* bad C action stmt */
|
||||
#define MEM_ERROR 5 /* out of memory errors */
|
||||
/*
|
||||
* Functions that return something special:
|
||||
*/
|
||||
extern char *str_compile(), *getmem(), *cclass(), *pmatch(), *fetchptr();
|
||||
extern VARIABLE *findvar(), *addvar(), *decl();
|
||||
extern char *newfile();
|
||||
extern INT pop(), popint(), dopattern();
|
||||
Reference in New Issue
Block a user