374 lines
12 KiB
C
374 lines
12 KiB
C
|
/*========================================================================*
|
||
|
|
* Mined.h *
|
||
|
|
*========================================================================*/
|
||
|
|
|
||
|
|
#include <minix/config.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include <limits.h>
|
||
|
|
|
||
|
|
#ifndef YMAX
|
||
|
|
#ifdef UNIX
|
||
|
|
#include <stdio.h>
|
||
|
|
#undef putchar
|
||
|
|
#undef getchar
|
||
|
|
#undef NULL
|
||
|
|
#undef EOF
|
||
|
|
extern char *CE, *VS, *SO, *SE, *CL, *AL, *CM;
|
||
|
|
#define YMAX 49
|
||
|
|
#else
|
||
|
|
#define YMAX 24 /* Maximum y coordinate starting at 0 */
|
||
|
|
/* Escape sequences. */
|
||
|
|
extern char *enter_string; /* String printed on entering mined */
|
||
|
|
extern char *rev_video; /* String for starting reverse video */
|
||
|
|
extern char *normal_video; /* String for leaving reverse video */
|
||
|
|
extern char *rev_scroll; /* String for reverse scrolling */
|
||
|
|
extern char *pos_string; /* Absolute cursor positioning */
|
||
|
|
#define X_PLUS ' ' /* To be added to x for cursor sequence */
|
||
|
|
#define Y_PLUS ' ' /* To be added to y for cursor sequence */
|
||
|
|
#endif /* UNIX */
|
||
|
|
|
||
|
|
#define XMAX 79 /* Maximum x coordinate starting at 0*/
|
||
|
|
#define SCREENMAX (YMAX - 1) /* Number of lines displayed */
|
||
|
|
#define XBREAK (XMAX - 0) /* Line shift at this coordinate */
|
||
|
|
#define SHIFT_SIZE 25 /* Number of chars to shift */
|
||
|
|
#define SHIFT_MARK '!' /* Char indicating line continues */
|
||
|
|
#define MAX_CHARS 1024 /* Maximum chars on one line */
|
||
|
|
|
||
|
|
/* LINE_START must be rounded up to the lowest SHIFT_SIZE */
|
||
|
|
#define LINE_START (((-MAX_CHARS - 1) / SHIFT_SIZE) * SHIFT_SIZE \
|
||
|
|
- SHIFT_SIZE)
|
||
|
|
#define LINE_END (MAX_CHARS + 1) /* Highest x-coordinate for line */
|
||
|
|
|
||
|
|
#define LINE_LEN (XMAX + 1) /* Number of characters on line */
|
||
|
|
#define SCREEN_SIZE (XMAX * YMAX) /* Size of I/O buffering */
|
||
|
|
#define BLOCK_SIZE 1024
|
||
|
|
|
||
|
|
/* Return values of functions */
|
||
|
|
#define ERRORS -1
|
||
|
|
#define NO_LINE (ERRORS - 1) /* Must be < 0 */
|
||
|
|
#define FINE (ERRORS + 1)
|
||
|
|
#define NO_INPUT (ERRORS + 2)
|
||
|
|
|
||
|
|
#define STD_OUT 1 /* File descriptor for terminal */
|
||
|
|
|
||
|
|
#if (CHIP == INTEL)
|
||
|
|
#define MEMORY_SIZE (50 * 1024) /* Size of data space to malloc */
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define REPORT 2 /* Report change of lines on # lines */
|
||
|
|
|
||
|
|
typedef int FLAG;
|
||
|
|
|
||
|
|
/* General flags */
|
||
|
|
#define FALSE 0
|
||
|
|
#define TRUE 1
|
||
|
|
#define NOT_VALID 2
|
||
|
|
#define VALID 3
|
||
|
|
#define OFF 4
|
||
|
|
#define ON 5
|
||
|
|
|
||
|
|
/* Expression flags */
|
||
|
|
#define FORWARD 6
|
||
|
|
#define REVERSE 7
|
||
|
|
|
||
|
|
/* Yank flags */
|
||
|
|
#define SMALLER 8
|
||
|
|
#define BIGGER 9
|
||
|
|
#define SAME 10
|
||
|
|
#define EMPTY 11
|
||
|
|
#define NO_DELETE 12
|
||
|
|
#define DELETE 13
|
||
|
|
#define READ 14
|
||
|
|
#define WRITE 15
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The Line structure. Each line entry contains a pointer to the next line,
|
||
|
|
* a pointer to the previous line, a pointer to the text and an unsigned char
|
||
|
|
* telling at which offset of the line printing should start (usually 0).
|
||
|
|
*/
|
||
|
|
struct Line {
|
||
|
|
struct Line *next;
|
||
|
|
struct Line *prev;
|
||
|
|
char *text;
|
||
|
|
unsigned char shift_count;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef struct Line LINE;
|
||
|
|
|
||
|
|
/* Dummy line indicator */
|
||
|
|
#define DUMMY 0x80
|
||
|
|
#define DUMMY_MASK 0x7F
|
||
|
|
|
||
|
|
/* Expression definitions */
|
||
|
|
#define NO_MATCH 0
|
||
|
|
#define MATCH 1
|
||
|
|
#define REG_ERROR 2
|
||
|
|
|
||
|
|
#define BEGIN_LINE (2 * REG_ERROR)
|
||
|
|
#define END_LINE (2 * BEGIN_LINE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* The regex structure. Status can be any of 0, BEGIN_LINE or REG_ERROR. In
|
||
|
|
* the last case, the result.err_mess field is assigned. Start_ptr and end_ptr
|
||
|
|
* point to the match found. For more details see the documentation file.
|
||
|
|
*/
|
||
|
|
struct regex {
|
||
|
|
union {
|
||
|
|
char *err_mess;
|
||
|
|
int *expression;
|
||
|
|
} result;
|
||
|
|
char status;
|
||
|
|
char *start_ptr;
|
||
|
|
char *end_ptr;
|
||
|
|
};
|
||
|
|
|
||
|
|
typedef struct regex REGEX;
|
||
|
|
|
||
|
|
/* NULL definitions */
|
||
|
|
#define NIL_PTR ((char *) 0)
|
||
|
|
#define NIL_LINE ((LINE *) 0)
|
||
|
|
#define NIL_REG ((REGEX *) 0)
|
||
|
|
#define NIL_INT ((int *) 0)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Forward declarations
|
||
|
|
*/
|
||
|
|
extern int nlines; /* Number of lines in file */
|
||
|
|
extern LINE *header; /* Head of line list */
|
||
|
|
extern LINE *tail; /* Last line in line list */
|
||
|
|
extern LINE *top_line; /* First line of screen */
|
||
|
|
extern LINE *bot_line; /* Last line of screen */
|
||
|
|
extern LINE *cur_line; /* Current line in use */
|
||
|
|
extern char *cur_text; /* Pointer to char on current line in use */
|
||
|
|
extern int last_y; /* Last y of screen. Usually SCREENMAX */
|
||
|
|
extern int ymax;
|
||
|
|
extern int screenmax;
|
||
|
|
extern char screen[SCREEN_SIZE];/* Output buffer for "writes" and "reads" */
|
||
|
|
|
||
|
|
extern int x, y; /* x, y coordinates on screen */
|
||
|
|
extern FLAG modified; /* Set when file is modified */
|
||
|
|
extern FLAG stat_visible; /* Set if status_line is visible */
|
||
|
|
extern FLAG writable; /* Set if file cannot be written */
|
||
|
|
extern FLAG quit; /* Set when quit character is typed */
|
||
|
|
extern FLAG rpipe; /* Set if file should be read from stdin */
|
||
|
|
extern int input_fd; /* Fd for command input */
|
||
|
|
extern FLAG loading; /* Set if we're loading a file */
|
||
|
|
extern int out_count; /* Index in output buffer */
|
||
|
|
extern char file_name[LINE_LEN]; /* Name of file in use */
|
||
|
|
extern char text_buffer[MAX_CHARS]; /* Buffer for modifying text */
|
||
|
|
extern char *blank_line; /* Clear line to end */
|
||
|
|
|
||
|
|
extern char yank_file[]; /* Temp file for buffer */
|
||
|
|
extern FLAG yank_status; /* Status of yank_file */
|
||
|
|
extern long chars_saved; /* Nr of chars saved in buffer */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Empty output buffer
|
||
|
|
*/
|
||
|
|
#define clear_buffer() (out_count = 0)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print character on terminal
|
||
|
|
*/
|
||
|
|
#define putchar(c) (void) write_char(STD_OUT, (c))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Ring bell on terminal
|
||
|
|
*/
|
||
|
|
#define ring_bell() putchar('\07')
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print string on terminal
|
||
|
|
*/
|
||
|
|
#define string_print(str) (void) writeline(STD_OUT, (str))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Flush output buffer
|
||
|
|
*/
|
||
|
|
#define flush() (void) flush_buffer(STD_OUT)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Convert cnt to nearest tab position
|
||
|
|
*/
|
||
|
|
#define tab(cnt) (((cnt) + 8) & ~07)
|
||
|
|
#define is_tab(c) ((c) == '\t')
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Word defenitions
|
||
|
|
*/
|
||
|
|
#define white_space(c) ((c) == ' ' || (c) == '\t')
|
||
|
|
#define alpha(c) ((c) != ' ' && (c) != '\t' && (c) != '\n')
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print line on terminal at offset 0 and clear tail of line
|
||
|
|
*/
|
||
|
|
#define line_print(line) put_line(line, 0, TRUE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Move to coordinates and set textp. (Don't use address)
|
||
|
|
*/
|
||
|
|
#define move_to(nx, ny) move((nx), NIL_PTR, (ny))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Move to coordinates on screen as indicated by textp.
|
||
|
|
*/
|
||
|
|
#define move_address(address) move(0, (address), y)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Functions handling status_line. ON means in reverse video.
|
||
|
|
*/
|
||
|
|
#define status_line(str1, str2) (void) bottom_line(ON, (str1), \
|
||
|
|
(str2), NIL_PTR, FALSE)
|
||
|
|
#define error(str1, str2) (void) bottom_line(ON, (str1), \
|
||
|
|
(str2), NIL_PTR, FALSE)
|
||
|
|
#define get_string(str1,str2, fl) bottom_line(ON, (str1), NIL_PTR, (str2), fl)
|
||
|
|
#define clear_status() (void) bottom_line(OFF, NIL_PTR, NIL_PTR, \
|
||
|
|
NIL_PTR, FALSE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print info about current file and buffer.
|
||
|
|
*/
|
||
|
|
#define fstatus(mess, cnt) file_status((mess), (cnt), file_name, \
|
||
|
|
nlines, writable, modified)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Get real shift value.
|
||
|
|
*/
|
||
|
|
#define get_shift(cnt) ((cnt) & DUMMY_MASK)
|
||
|
|
|
||
|
|
#endif /* YMAX */
|
||
|
|
|
||
|
|
/* mined1.c */
|
||
|
|
|
||
|
|
_PROTOTYPE(void FS, (void));
|
||
|
|
_PROTOTYPE(void VI, (void));
|
||
|
|
_PROTOTYPE(int WT, (void));
|
||
|
|
_PROTOTYPE(void XWT, (void));
|
||
|
|
_PROTOTYPE(void SH, (void));
|
||
|
|
_PROTOTYPE(LINE *proceed, (LINE *line, int count ));
|
||
|
|
_PROTOTYPE(int bottom_line, (FLAG revfl, char *s1, char *s2, char *inbuf, FLAG statfl ));
|
||
|
|
_PROTOTYPE(int count_chars, (LINE *line ));
|
||
|
|
_PROTOTYPE(void move, (int new_x, char *new_address, int new_y ));
|
||
|
|
_PROTOTYPE(int find_x, (LINE *line, char *address ));
|
||
|
|
_PROTOTYPE(char *find_address, (LINE *line, int x_coord, int *old_x ));
|
||
|
|
_PROTOTYPE(int length_of, (char *string ));
|
||
|
|
_PROTOTYPE(void copy_string, (char *to, char *from ));
|
||
|
|
_PROTOTYPE(void reset, (LINE *head_line, int screen_y ));
|
||
|
|
_PROTOTYPE(void set_cursor, (int nx, int ny ));
|
||
|
|
_PROTOTYPE(void open_device, (void));
|
||
|
|
_PROTOTYPE(int getchar, (void));
|
||
|
|
_PROTOTYPE(void display, (int x_coord, int y_coord, LINE *line, int count ));
|
||
|
|
_PROTOTYPE(int write_char, (int fd, int c ));
|
||
|
|
_PROTOTYPE(int writeline, (int fd, char *text ));
|
||
|
|
_PROTOTYPE(void put_line, (LINE *line, int offset, FLAG clear_line ));
|
||
|
|
_PROTOTYPE(int flush_buffer, (int fd ));
|
||
|
|
_PROTOTYPE(void bad_write, (int fd ));
|
||
|
|
_PROTOTYPE(void catch, (int sig ));
|
||
|
|
_PROTOTYPE(void abort_mined, (void));
|
||
|
|
_PROTOTYPE(void raw_mode, (FLAG state ));
|
||
|
|
_PROTOTYPE(void panic, (char *message ));
|
||
|
|
_PROTOTYPE(char *alloc, (int bytes ));
|
||
|
|
_PROTOTYPE(void free_space, (char *p ));
|
||
|
|
/*
|
||
|
|
#ifdef UNIX
|
||
|
|
_PROTOTYPE(void (*key_map [128]), (void));
|
||
|
|
#else
|
||
|
|
_PROTOTYPE(void (*key_map [256]), (void));
|
||
|
|
#endif
|
||
|
|
*/
|
||
|
|
_PROTOTYPE(void initialize, (void));
|
||
|
|
_PROTOTYPE(char *basename, (char *path ));
|
||
|
|
_PROTOTYPE(void load_file, (char *file ));
|
||
|
|
_PROTOTYPE(int get_line, (int fd, char *buffer ));
|
||
|
|
_PROTOTYPE(LINE *install_line, (char *buffer, int length ));
|
||
|
|
_PROTOTYPE(void main, (int argc, char *argv []));
|
||
|
|
_PROTOTYPE(void RD, (void));
|
||
|
|
_PROTOTYPE(void I, (void));
|
||
|
|
_PROTOTYPE(void XT, (void));
|
||
|
|
_PROTOTYPE(void ESC, (void));
|
||
|
|
_PROTOTYPE(int ask_save, (void));
|
||
|
|
_PROTOTYPE(int line_number, (void));
|
||
|
|
_PROTOTYPE(void file_status, (char *message, long count, char *file, int lines,
|
||
|
|
FLAG writefl, FLAG changed ));
|
||
|
|
#if __STDC__
|
||
|
|
void build_string(char *buf, char *fmt, ...);
|
||
|
|
#else
|
||
|
|
void build_string();
|
||
|
|
#endif
|
||
|
|
_PROTOTYPE(char *num_out, (long number ));
|
||
|
|
_PROTOTYPE(int get_number, (char *message, int *result ));
|
||
|
|
_PROTOTYPE(int input, (char *inbuf, FLAG clearfl ));
|
||
|
|
_PROTOTYPE(int get_file, (char *message, char *file ));
|
||
|
|
_PROTOTYPE(int _getchar, (void));
|
||
|
|
_PROTOTYPE(void _flush, (void));
|
||
|
|
_PROTOTYPE(void _putchar, (int c ));
|
||
|
|
_PROTOTYPE(void get_term, (void));
|
||
|
|
|
||
|
|
/* mined2.c */
|
||
|
|
|
||
|
|
_PROTOTYPE(void UP, (void));
|
||
|
|
_PROTOTYPE(void DN, (void));
|
||
|
|
_PROTOTYPE(void LF, (void));
|
||
|
|
_PROTOTYPE(void RT, (void));
|
||
|
|
_PROTOTYPE(void HIGH, (void));
|
||
|
|
_PROTOTYPE(void LOW, (void));
|
||
|
|
_PROTOTYPE(void BL, (void));
|
||
|
|
_PROTOTYPE(void EL, (void));
|
||
|
|
_PROTOTYPE(void GOTO, (void));
|
||
|
|
_PROTOTYPE(void PD, (void));
|
||
|
|
_PROTOTYPE(void PU, (void));
|
||
|
|
_PROTOTYPE(void HO, (void));
|
||
|
|
_PROTOTYPE(void EF, (void));
|
||
|
|
_PROTOTYPE(void SU, (void));
|
||
|
|
_PROTOTYPE(void SD, (void));
|
||
|
|
_PROTOTYPE(int forward_scroll, (void));
|
||
|
|
_PROTOTYPE(int reverse_scroll, (void));
|
||
|
|
_PROTOTYPE(void MP, (void));
|
||
|
|
_PROTOTYPE(void move_previous_word, (FLAG remove ));
|
||
|
|
_PROTOTYPE(void MN, (void));
|
||
|
|
_PROTOTYPE(void move_next_word, (FLAG remove ));
|
||
|
|
_PROTOTYPE(void DCC, (void));
|
||
|
|
_PROTOTYPE(void DPC, (void));
|
||
|
|
_PROTOTYPE(void DLN, (void));
|
||
|
|
_PROTOTYPE(void DNW, (void));
|
||
|
|
_PROTOTYPE(void DPW, (void));
|
||
|
|
_PROTOTYPE(void S, (int character ));
|
||
|
|
_PROTOTYPE(void CTL, (void));
|
||
|
|
_PROTOTYPE(void LIB, (void));
|
||
|
|
_PROTOTYPE(LINE *line_insert, (LINE *line, char *string, int len ));
|
||
|
|
_PROTOTYPE(int insert, (LINE *line, char *location, char *string ));
|
||
|
|
_PROTOTYPE(LINE *line_delete, (LINE *line ));
|
||
|
|
_PROTOTYPE(void delete, (LINE *start_line, char *start_textp, LINE *end_line, char *end_textp ));
|
||
|
|
_PROTOTYPE(void PT, (void));
|
||
|
|
_PROTOTYPE(void IF, (void));
|
||
|
|
_PROTOTYPE(void file_insert, (int fd, FLAG old_pos ));
|
||
|
|
_PROTOTYPE(void WB, (void));
|
||
|
|
_PROTOTYPE(void MA, (void));
|
||
|
|
_PROTOTYPE(void YA, (void));
|
||
|
|
_PROTOTYPE(void DT, (void));
|
||
|
|
_PROTOTYPE(void set_up, (FLAG remove ));
|
||
|
|
_PROTOTYPE(FLAG checkmark, (void));
|
||
|
|
_PROTOTYPE(int legal, (void));
|
||
|
|
_PROTOTYPE(void yank, (LINE *start_line, char *start_textp, LINE *end_line, char *end_textp, FLAG remove ));
|
||
|
|
_PROTOTYPE(int scratch_file, (FLAG mode ));
|
||
|
|
_PROTOTYPE(void SF, (void));
|
||
|
|
_PROTOTYPE(void SR, (void));
|
||
|
|
_PROTOTYPE(REGEX *get_expression, (char *message ));
|
||
|
|
_PROTOTYPE(void GR, (void));
|
||
|
|
_PROTOTYPE(void LR, (void));
|
||
|
|
_PROTOTYPE(void change, (char *message, FLAG file ));
|
||
|
|
_PROTOTYPE(char *substitute, (LINE *line, REGEX *program, char *replacement ));
|
||
|
|
_PROTOTYPE(void search, (char *message, FLAG method ));
|
||
|
|
_PROTOTYPE(int find_y, (LINE *match_line ));
|
||
|
|
_PROTOTYPE(void finished, (REGEX *program, int *last_exp ));
|
||
|
|
_PROTOTYPE(void compile, (char *pattern, REGEX *program ));
|
||
|
|
_PROTOTYPE(LINE *match, (REGEX *program, char *string, FLAG method ));
|
||
|
|
_PROTOTYPE(int line_check, (REGEX *program, char *string, FLAG method ));
|
||
|
|
_PROTOTYPE(int check_string, (REGEX *program, char *string, int *expression ));
|
||
|
|
_PROTOTYPE(int star, (REGEX *program, char *end_position, char *string, int *expression ));
|
||
|
|
_PROTOTYPE(int in_list, (int *list, int c, int list_length, int opcode ));
|
||
|
|
_PROTOTYPE(void dummy_line, (void));
|