422 lines
13 KiB
C
422 lines
13 KiB
C
/*
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* $Id: awk.h,v 1.132 2006-10-23 14:44:42 bacon Exp $
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*/
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#ifndef _SSE_AWK_AWK_H_
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#define _SSE_AWK_AWK_H_
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#include <sse/types.h>
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#include <sse/macros.h>
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typedef struct sse_awk_t sse_awk_t;
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typedef struct sse_awk_run_t sse_awk_run_t;
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typedef struct sse_awk_val_t sse_awk_val_t;
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typedef struct sse_awk_extio_t sse_awk_extio_t;
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typedef struct sse_awk_syscas_t sse_awk_syscas_t;
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typedef struct sse_awk_srcios_t sse_awk_srcios_t;
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typedef struct sse_awk_runios_t sse_awk_runios_t;
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typedef struct sse_awk_runcbs_t sse_awk_runcbs_t;
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typedef struct sse_awk_runarg_t sse_awk_runarg_t;
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typedef void (*sse_awk_lk_t) (sse_awk_t* awk, void* arg);
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typedef sse_ssize_t (*sse_awk_io_t) (
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int cmd, void* arg, sse_char_t* data, sse_size_t count);
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struct sse_awk_extio_t
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{
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sse_awk_run_t* run; /* [IN] */
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int type; /* [IN] console, file, coproc, pipe */
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int mode; /* [IN] read, write, etc */
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sse_char_t* name; /* [IN] */
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void* custom_data; /* [IN] */
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void* handle; /* [OUT] */
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/* input buffer */
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struct
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{
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sse_char_t buf[2048];
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sse_size_t pos;
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sse_size_t len;
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sse_bool_t eof;
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} in;
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sse_awk_extio_t* next;
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};
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struct sse_awk_syscas_t
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{
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/* memory */
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void* (*malloc) (sse_size_t n, void* custom_data);
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void* (*realloc) (void* ptr, sse_size_t n, void* custom_data);
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void (*free) (void* ptr, void* custom_data);
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/* thread lock */
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sse_awk_lk_t lock;
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sse_awk_lk_t unlock;
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/* character class */
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sse_bool_t (*is_upper) (sse_cint_t c);
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sse_bool_t (*is_lower) (sse_cint_t c);
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sse_bool_t (*is_alpha) (sse_cint_t c);
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sse_bool_t (*is_digit) (sse_cint_t c);
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sse_bool_t (*is_xdigit) (sse_cint_t c);
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sse_bool_t (*is_alnum) (sse_cint_t c);
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sse_bool_t (*is_space) (sse_cint_t c);
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sse_bool_t (*is_print) (sse_cint_t c);
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sse_bool_t (*is_graph) (sse_cint_t c);
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sse_bool_t (*is_cntrl) (sse_cint_t c);
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sse_bool_t (*is_punct) (sse_cint_t c);
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sse_cint_t (*to_upper) (sse_cint_t c);
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sse_cint_t (*to_lower) (sse_cint_t c);
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/* utilities */
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void* (*memcpy) (void* dst, const void* src, sse_size_t n);
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void* (*memset) (void* dst, int val, sse_size_t n);
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int (*sprintf) (sse_char_t* buf, sse_size_t size, sse_char_t* fmt, ...);
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int (*dprintf) (sse_char_t* fmt, ...);
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void (*abort) (void);
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void* custom_data;
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};
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struct sse_awk_srcios_t
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{
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sse_awk_io_t in;
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sse_awk_io_t out;
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void* custom_data;
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};
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struct sse_awk_runios_t
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{
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sse_awk_io_t pipe;
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sse_awk_io_t coproc;
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sse_awk_io_t file;
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sse_awk_io_t console;
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void* custom_data;
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};
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struct sse_awk_runcbs_t
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{
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void (*on_start) (sse_awk_t* awk, void* handle, void* arg);
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void (*on_end) (sse_awk_t* awk, void* handle, int errnum, void* arg);
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void* custom_data;
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};
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struct sse_awk_runarg_t
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{
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const sse_char_t* ptr;
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sse_size_t len;
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};
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/* io function commands */
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enum
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{
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SSE_AWK_IO_OPEN = 0,
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SSE_AWK_IO_CLOSE = 1,
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SSE_AWK_IO_READ = 2,
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SSE_AWK_IO_WRITE = 3,
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SSE_AWK_IO_FLUSH = 4,
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SSE_AWK_IO_NEXT = 5
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};
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enum
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{
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SSE_AWK_IO_PIPE_READ = 0,
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SSE_AWK_IO_PIPE_WRITE = 1,
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SSE_AWK_IO_FILE_READ = 0,
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SSE_AWK_IO_FILE_WRITE = 1,
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SSE_AWK_IO_FILE_APPEND = 2,
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SSE_AWK_IO_CONSOLE_READ = 0,
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SSE_AWK_IO_CONSOLE_WRITE = 1
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};
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/* various options */
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enum
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{
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/* allow undeclared variables */
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SSE_AWK_IMPLICIT = (1 << 0),
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/* variable requires explicit declaration */
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SSE_AWK_EXPLICIT = (1 << 1),
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/* a function name should not coincide to be a variable name */
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SSE_AWK_UNIQUE = (1 << 2),
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/* allow variable shading */
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SSE_AWK_SHADING = (1 << 3),
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/* support shift operators */
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SSE_AWK_SHIFT = (1 << 4),
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/* support comments by a hash sign */
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SSE_AWK_HASHSIGN = (1 << 5),
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/* support comments by double slashes */
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SSE_AWK_DBLSLASHES = (1 << 6),
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/* support string concatenation in tokenization.
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* this option can change the behavior of a certain construct.
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* getline < "abc" ".def" is treated as if it is getline < "abc.def"
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* when this option is on. If this option is off, the same expression
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* is treated as if it is (getline < "abc") ".def". */
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SSE_AWK_STRCONCAT = (1 << 7),
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/* support getline and print */
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SSE_AWK_EXTIO = (1 << 8),
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/* support blockless patterns */
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SSE_AWK_BLOCKLESS = (1 << 9),
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/* execution starts from main */
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SSE_AWK_RUNMAIN = (1 << 10),
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/* use 1 as the start index for string operations */
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SSE_AWK_STRINDEXONE = (1 << 11),
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/* strip off leading and trailing spaces when splitting a record
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* into fields with a regular expression.
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*
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* Consider the following program.
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* BEGIN { FS="[:[:space:]]+"; }
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* {
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* print "NF=" NF;
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* for (i = 0; i < NF; i++) print i " [" $(i+1) "]";
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* }
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*
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* The program splits " a b c " into [a], [b], [c] when this
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* option is on while into [], [a], [b], [c], [] when it is off.
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*/
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SSE_AWK_STRIPSPACES = (1 << 12),
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/* a newline terminates a statement */
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SSE_AWK_NEWLINE = (1 << 13)
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};
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/* error code */
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enum
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{
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SSE_AWK_ENOERR, /* no error */
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SSE_AWK_ENOMEM, /* out of memory */
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SSE_AWK_EINVAL, /* invalid parameter */
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SSE_AWK_ERUNTIME, /* run-time error */
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SSE_AWK_ERUNNING, /* there are running instances */
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SSE_AWK_ETOOMANYRUNS, /* too many running instances */
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SSE_AWK_ERECURSION, /* recursion too deep */
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SSE_AWK_ESRCINOPEN,
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SSE_AWK_ESRCINCLOSE,
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SSE_AWK_ESRCINREAD,
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SSE_AWK_ESRCOUTOPEN,
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SSE_AWK_ESRCOUTCLOSE,
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SSE_AWK_ESRCOUTWRITE,
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SSE_AWK_ECONINOPEN,
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SSE_AWK_ECONINCLOSE,
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SSE_AWK_ECONINNEXT,
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SSE_AWK_ECONINDATA,
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SSE_AWK_ECONOUTOPEN,
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SSE_AWK_ECONOUTCLOSE,
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SSE_AWK_ECONOUTNEXT,
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SSE_AWK_ECONOUTDATA,
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SSE_AWK_ELXCHR, /* lexer came accross an wrong character */
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SSE_AWK_ELXUNG, /* lexer failed to unget a character */
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SSE_AWK_EENDSRC, /* unexpected end of source */
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SSE_AWK_EENDCOMMENT, /* unexpected end of a comment */
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SSE_AWK_EENDSTR, /* unexpected end of a string */
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SSE_AWK_EENDREX, /* unexpected end of a regular expression */
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SSE_AWK_ELBRACE, /* left brace expected */
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SSE_AWK_ELPAREN, /* left parenthesis expected */
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SSE_AWK_ERPAREN, /* right parenthesis expected */
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SSE_AWK_ERBRACK, /* right bracket expected */
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SSE_AWK_ECOMMA, /* comma expected */
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SSE_AWK_ESEMICOLON, /* semicolon expected */
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SSE_AWK_ECOLON, /* colon expected */
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SSE_AWK_EIN, /* keyword 'in' is expected */
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SSE_AWK_ENOTVAR, /* not a variable name after 'in' */
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SSE_AWK_EEXPRESSION, /* expression expected */
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SSE_AWK_EWHILE, /* keyword 'while' is expected */
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SSE_AWK_EASSIGNMENT, /* assignment statement expected */
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SSE_AWK_EIDENT, /* identifier expected */
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SSE_AWK_EBEGINBLOCK, /* BEGIN requires an action block */
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SSE_AWK_EENDBLOCK, /* END requires an action block */
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SSE_AWK_EDUPBEGIN, /* duplicate BEGIN */
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SSE_AWK_EDUPEND, /* duplicate END */
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SSE_AWK_EDUPFUNC, /* duplicate function name */
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SSE_AWK_EDUPPARAM, /* duplicate parameter name */
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SSE_AWK_EDUPVAR, /* duplicate variable name */
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SSE_AWK_EDUPNAME, /* duplicate name - function, variable, etc */
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SSE_AWK_EUNDEF, /* undefined identifier */
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SSE_AWK_ELVALUE, /* l-value required */
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SSE_AWK_ETOOFEWARGS, /* too few arguments */
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SSE_AWK_ETOOMANYARGS, /* too many arguments */
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SSE_AWK_ETOOMANYGLOBALS, /* too many global variables */
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SSE_AWK_ETOOMANYLOCALS, /* too many local variables */
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SSE_AWK_ETOOMANYPARAMS, /* too many parameters */
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SSE_AWK_EBREAK, /* break outside a loop */
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SSE_AWK_ECONTINUE, /* continue outside a loop */
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SSE_AWK_ENEXT, /* next illegal in BEGIN or END block */
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SSE_AWK_ENEXTFILE, /* nextfile illegal in BEGIN or END block */
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SSE_AWK_EGETLINE, /* getline expected */
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/* run time error */
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SSE_AWK_EDIVBYZERO, /* divide by zero */
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SSE_AWK_EOPERAND, /* invalid operand */
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SSE_AWK_EPOSIDX, /* wrong position index */
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SSE_AWK_ENOSUCHFUNC, /* no such function */
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SSE_AWK_ENOTASSIGNABLE, /* value not assignable */
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SSE_AWK_ENOTINDEXABLE, /* not indexable variable */
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SSE_AWK_ENOTDELETABLE, /* not deletable variable */
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SSE_AWK_ENOTREFERENCEABLE, /* not referenceable value */
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SSE_AWK_EIDXVALASSMAP, /* indexed value cannot be assigned a map */
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SSE_AWK_EPOSVALASSMAP, /* a positional cannot be assigned a map */
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SSE_AWK_EMAPTOSCALAR, /* cannot change a map to a scalar value */
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SSE_AWK_ESCALARTOMAP, /* cannot change a scalar value to a map */
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SSE_AWK_EMAPNOTALLOWED, /* a map is not allowed */
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SSE_AWK_EVALTYPE, /* wrong value type */
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SSE_AWK_EPIPE, /* pipe operation error */
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SSE_AWK_ENEXTCALL, /* next called from BEGIN or END */
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SSE_AWK_ENEXTFILECALL, /* nextfile called from BEGIN or END */
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SSE_AWK_EIOIMPL, /* wrong implementation of user io handler */
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SSE_AWK_ENOSUCHIO, /* no such io name found */
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SSE_AWK_EIOHANDLER, /* io handler has returned an error */
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SSE_AWK_EINTERNAL, /* internal error */
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/* regular expression error */
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SSE_AWK_EREXRPAREN, /* a right parenthesis is expected */
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SSE_AWK_EREXRBRACKET, /* a right bracket is expected */
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SSE_AWK_EREXRBRACE, /* a right brace is expected */
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SSE_AWK_EREXCOLON, /* a colon is expected */
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SSE_AWK_EREXCRANGE, /* invalid character range */
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SSE_AWK_EREXCCLASS, /* invalid character class */
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SSE_AWK_EREXBRANGE, /* invalid boundary range */
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SSE_AWK_EREXEND, /* unexpected end of the pattern */
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SSE_AWK_EREXGARBAGE /* garbage after the pattern */
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};
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/* extio types */
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enum
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{
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/* extio types available */
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SSE_AWK_EXTIO_PIPE,
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SSE_AWK_EXTIO_COPROC,
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SSE_AWK_EXTIO_FILE,
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SSE_AWK_EXTIO_CONSOLE,
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/* reserved for internal use only */
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SSE_AWK_EXTIO_NUM
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};
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#ifdef __cplusplus
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extern "C" {
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#endif
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sse_awk_t* sse_awk_open (const sse_awk_syscas_t* syscas);
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int sse_awk_close (sse_awk_t* awk);
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int sse_awk_clear (sse_awk_t* awk);
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int sse_awk_geterrnum (sse_awk_t* awk);
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sse_size_t sse_awk_getsrcline (sse_awk_t* awk);
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int sse_awk_getopt (sse_awk_t* awk);
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void sse_awk_setopt (sse_awk_t* awk, int opt);
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int sse_awk_parse (sse_awk_t* awk, sse_awk_srcios_t* srcios);
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/*
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* sse_awk_run return 0 on success and -1 on failure, generally speaking.
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* A runtime context is required for it to start running the program.
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* Once the runtime context is created, the program starts to run.
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* The context creation failure is reported by the return value -1 of
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* this function. however, the runtime error after the context creation
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* is reported differently depending on the use of the callback.
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* When no callback is specified (i.e. runcbs is SSE_NULL), sse_awk_run
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* returns -1 on an error and awk->errnum is set accordingly.
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* However, if a callback is specified (i.e. runcbs is not SSE_NULL),
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* sse_awk_run returns 0 on both success and failure. Instead, the
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* on_end handler of the callback is triggered with the relevant
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* error number. The third parameter to on_end denotes this error number.
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*/
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int sse_awk_run (sse_awk_t* awk,
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sse_awk_runios_t* runios,
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sse_awk_runcbs_t* runcbs,
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sse_awk_runarg_t* runarg);
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int sse_awk_stop (sse_awk_t* awk, sse_awk_run_t* run);
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void sse_awk_stopall (sse_awk_t* awk);
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/* functions to access internal stack structure */
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sse_size_t sse_awk_getnargs (sse_awk_run_t* run);
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sse_awk_val_t* sse_awk_getarg (sse_awk_run_t* run, sse_size_t idx);
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sse_awk_val_t* sse_awk_getglobal (sse_awk_run_t* run, sse_size_t idx);
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int sse_awk_setglobal (sse_awk_run_t* run, sse_size_t idx, sse_awk_val_t* val);
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void sse_awk_setretval (sse_awk_run_t* run, sse_awk_val_t* val);
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int sse_awk_setconsolename (
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sse_awk_run_t* run, const sse_char_t* name, sse_size_t len);
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int sse_awk_getrunerrnum (sse_awk_run_t* run);
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void sse_awk_setrunerrnum (sse_awk_run_t* run, int errnum);
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/* record and field functions */
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int sse_awk_clrrec (sse_awk_run_t* run, sse_bool_t skip_inrec_line);
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int sse_awk_setrec (sse_awk_run_t* run, sse_size_t idx, const sse_char_t* str, sse_size_t len);
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/* utility functions exported by awk.h */
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sse_long_t sse_awk_strxtolong (
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sse_awk_t* awk, const sse_char_t* str, sse_size_t len,
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int base, const sse_char_t** endptr);
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sse_real_t sse_awk_strxtoreal (
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sse_awk_t* awk, const sse_char_t* str, sse_size_t len,
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const sse_char_t** endptr);
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sse_size_t sse_awk_longtostr (
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sse_long_t value, int radix, const sse_char_t* prefix,
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sse_char_t* buf, sse_size_t size);
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/* string functions exported by awk.h */
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sse_char_t* sse_awk_strdup (
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sse_awk_t* awk, const sse_char_t* str);
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sse_char_t* sse_awk_strxdup (
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sse_awk_t* awk, const sse_char_t* str, sse_size_t len);
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sse_char_t* sse_awk_strxdup2 (
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sse_awk_t* awk,
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const sse_char_t* str1, sse_size_t len1,
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const sse_char_t* str2, sse_size_t len2);
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sse_size_t sse_awk_strlen (const sse_char_t* str);
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sse_size_t sse_awk_strcpy (sse_char_t* buf, const sse_char_t* str);
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sse_size_t sse_awk_strncpy (sse_char_t* buf, const sse_char_t* str, sse_size_t len);
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int sse_awk_strcmp (const sse_char_t* s1, const sse_char_t* s2);
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int sse_awk_strxncmp (
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const sse_char_t* s1, sse_size_t len1,
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const sse_char_t* s2, sse_size_t len2);
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int sse_awk_strxncasecmp (
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sse_awk_t* awk,
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const sse_char_t* s1, sse_size_t len1,
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const sse_char_t* s2, sse_size_t len2);
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sse_char_t* sse_awk_strxnstr (
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const sse_char_t* str, sse_size_t strsz,
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const sse_char_t* sub, sse_size_t subsz);
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/* utility functions to convert an error number ot a string */
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const sse_char_t* sse_awk_geterrstr (int errnum);
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#ifdef __cplusplus
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}
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#endif
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#endif
|