a1420f2d09
Major changes from v429: * Don't pass "-" to non-pipe LESSOPEN unless it starts with "-". * Allow a fraction as the argument to the -# (--shift) option. * Fix highlight bug when underlined/overstruck text matches at end of line. * Fix non-regex searches with ctrl-R. Approved by: re (kensmith, kib)
873 lines
18 KiB
C
873 lines
18 KiB
C
/*
|
|
* Copyright (C) 1984-2009 Mark Nudelman
|
|
*
|
|
* You may distribute under the terms of either the GNU General Public
|
|
* License or the Less License, as specified in the README file.
|
|
*
|
|
* For more information about less, or for information on how to
|
|
* contact the author, see the README file.
|
|
*/
|
|
|
|
|
|
/*
|
|
* lesskey [-o output] [input]
|
|
*
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
*
|
|
* Make a .less file.
|
|
* If no input file is specified, standard input is used.
|
|
* If no output file is specified, $HOME/.less is used.
|
|
*
|
|
* The .less file is used to specify (to "less") user-defined
|
|
* key bindings. Basically any sequence of 1 to MAX_CMDLEN
|
|
* keystrokes may be bound to an existing less function.
|
|
*
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
*
|
|
* The input file is an ascii file consisting of a
|
|
* sequence of lines of the form:
|
|
* string <whitespace> action [chars] <newline>
|
|
*
|
|
* "string" is a sequence of command characters which form
|
|
* the new user-defined command. The command
|
|
* characters may be:
|
|
* 1. The actual character itself.
|
|
* 2. A character preceded by ^ to specify a
|
|
* control character (e.g. ^X means control-X).
|
|
* 3. A backslash followed by one to three octal digits
|
|
* to specify a character by its octal value.
|
|
* 4. A backslash followed by b, e, n, r or t
|
|
* to specify \b, ESC, \n, \r or \t, respectively.
|
|
* 5. Any character (other than those mentioned above) preceded
|
|
* by a \ to specify the character itself (characters which
|
|
* must be preceded by \ include ^, \, and whitespace.
|
|
* "action" is the name of a "less" action, from the table below.
|
|
* "chars" is an optional sequence of characters which is treated
|
|
* as keyboard input after the command is executed.
|
|
*
|
|
* Blank lines and lines which start with # are ignored,
|
|
* except for the special control lines:
|
|
* #command Signals the beginning of the command
|
|
* keys section.
|
|
* #line-edit Signals the beginning of the line-editing
|
|
* keys section.
|
|
* #env Signals the beginning of the environment
|
|
* variable section.
|
|
* #stop Stops command parsing in less;
|
|
* causes all default keys to be disabled.
|
|
*
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
*
|
|
* The output file is a non-ascii file, consisting of a header,
|
|
* one or more sections, and a trailer.
|
|
* Each section begins with a section header, a section length word
|
|
* and the section data. Normally there are three sections:
|
|
* CMD_SECTION Definition of command keys.
|
|
* EDIT_SECTION Definition of editing keys.
|
|
* END_SECTION A special section header, with no
|
|
* length word or section data.
|
|
*
|
|
* Section data consists of zero or more byte sequences of the form:
|
|
* string <0> <action>
|
|
* or
|
|
* string <0> <action|A_EXTRA> chars <0>
|
|
*
|
|
* "string" is the command string.
|
|
* "<0>" is one null byte.
|
|
* "<action>" is one byte containing the action code (the A_xxx value).
|
|
* If action is ORed with A_EXTRA, the action byte is followed
|
|
* by the null-terminated "chars" string.
|
|
*
|
|
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
|
|
*/
|
|
|
|
#include "less.h"
|
|
#include "lesskey.h"
|
|
#include "cmd.h"
|
|
|
|
struct cmdname
|
|
{
|
|
char *cn_name;
|
|
int cn_action;
|
|
};
|
|
|
|
struct cmdname cmdnames[] =
|
|
{
|
|
{ "back-bracket", A_B_BRACKET },
|
|
{ "back-line", A_B_LINE },
|
|
{ "back-line-force", A_BF_LINE },
|
|
{ "back-screen", A_B_SCREEN },
|
|
{ "back-scroll", A_B_SCROLL },
|
|
{ "back-search", A_B_SEARCH },
|
|
{ "back-window", A_B_WINDOW },
|
|
{ "debug", A_DEBUG },
|
|
{ "digit", A_DIGIT },
|
|
{ "display-flag", A_DISP_OPTION },
|
|
{ "display-option", A_DISP_OPTION },
|
|
{ "end", A_GOEND },
|
|
{ "examine", A_EXAMINE },
|
|
{ "filter", A_FILTER },
|
|
{ "first-cmd", A_FIRSTCMD },
|
|
{ "firstcmd", A_FIRSTCMD },
|
|
{ "flush-repaint", A_FREPAINT },
|
|
{ "forw-bracket", A_F_BRACKET },
|
|
{ "forw-forever", A_F_FOREVER },
|
|
{ "forw-line", A_F_LINE },
|
|
{ "forw-line-force", A_FF_LINE },
|
|
{ "forw-screen", A_F_SCREEN },
|
|
{ "forw-screen-force", A_FF_SCREEN },
|
|
{ "forw-scroll", A_F_SCROLL },
|
|
{ "forw-search", A_F_SEARCH },
|
|
{ "forw-window", A_F_WINDOW },
|
|
{ "goto-end", A_GOEND },
|
|
{ "goto-line", A_GOLINE },
|
|
{ "goto-mark", A_GOMARK },
|
|
{ "help", A_HELP },
|
|
{ "index-file", A_INDEX_FILE },
|
|
{ "invalid", A_UINVALID },
|
|
{ "left-scroll", A_LSHIFT },
|
|
{ "next-file", A_NEXT_FILE },
|
|
{ "next-tag", A_NEXT_TAG },
|
|
{ "noaction", A_NOACTION },
|
|
{ "percent", A_PERCENT },
|
|
{ "pipe", A_PIPE },
|
|
{ "prev-file", A_PREV_FILE },
|
|
{ "prev-tag", A_PREV_TAG },
|
|
{ "quit", A_QUIT },
|
|
{ "remove-file", A_REMOVE_FILE },
|
|
{ "repaint", A_REPAINT },
|
|
{ "repaint-flush", A_FREPAINT },
|
|
{ "repeat-search", A_AGAIN_SEARCH },
|
|
{ "repeat-search-all", A_T_AGAIN_SEARCH },
|
|
{ "reverse-search", A_REVERSE_SEARCH },
|
|
{ "reverse-search-all", A_T_REVERSE_SEARCH },
|
|
{ "right-scroll", A_RSHIFT },
|
|
{ "set-mark", A_SETMARK },
|
|
{ "shell", A_SHELL },
|
|
{ "status", A_STAT },
|
|
{ "toggle-flag", A_OPT_TOGGLE },
|
|
{ "toggle-option", A_OPT_TOGGLE },
|
|
{ "undo-hilite", A_UNDO_SEARCH },
|
|
{ "version", A_VERSION },
|
|
{ "visual", A_VISUAL },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
struct cmdname editnames[] =
|
|
{
|
|
{ "back-complete", EC_B_COMPLETE },
|
|
{ "backspace", EC_BACKSPACE },
|
|
{ "delete", EC_DELETE },
|
|
{ "down", EC_DOWN },
|
|
{ "end", EC_END },
|
|
{ "expand", EC_EXPAND },
|
|
{ "forw-complete", EC_F_COMPLETE },
|
|
{ "home", EC_HOME },
|
|
{ "insert", EC_INSERT },
|
|
{ "invalid", EC_UINVALID },
|
|
{ "kill-line", EC_LINEKILL },
|
|
{ "left", EC_LEFT },
|
|
{ "literal", EC_LITERAL },
|
|
{ "right", EC_RIGHT },
|
|
{ "up", EC_UP },
|
|
{ "word-backspace", EC_W_BACKSPACE },
|
|
{ "word-delete", EC_W_DELETE },
|
|
{ "word-left", EC_W_LEFT },
|
|
{ "word-right", EC_W_RIGHT },
|
|
{ NULL, 0 }
|
|
};
|
|
|
|
struct table
|
|
{
|
|
struct cmdname *names;
|
|
char *pbuffer;
|
|
char buffer[MAX_USERCMD];
|
|
};
|
|
|
|
struct table cmdtable;
|
|
struct table edittable;
|
|
struct table vartable;
|
|
struct table *currtable = &cmdtable;
|
|
|
|
char fileheader[] = {
|
|
C0_LESSKEY_MAGIC,
|
|
C1_LESSKEY_MAGIC,
|
|
C2_LESSKEY_MAGIC,
|
|
C3_LESSKEY_MAGIC
|
|
};
|
|
char filetrailer[] = {
|
|
C0_END_LESSKEY_MAGIC,
|
|
C1_END_LESSKEY_MAGIC,
|
|
C2_END_LESSKEY_MAGIC
|
|
};
|
|
char cmdsection[1] = { CMD_SECTION };
|
|
char editsection[1] = { EDIT_SECTION };
|
|
char varsection[1] = { VAR_SECTION };
|
|
char endsection[1] = { END_SECTION };
|
|
|
|
char *infile = NULL;
|
|
char *outfile = NULL ;
|
|
|
|
int linenum;
|
|
int errors;
|
|
|
|
extern char version[];
|
|
|
|
void
|
|
usage()
|
|
{
|
|
fprintf(stderr, "usage: lesskey [-o output] [input]\n");
|
|
exit(1);
|
|
}
|
|
|
|
char *
|
|
mkpathname(dirname, filename)
|
|
char *dirname;
|
|
char *filename;
|
|
{
|
|
char *pathname;
|
|
|
|
pathname = calloc(strlen(dirname) + strlen(filename) + 2, sizeof(char));
|
|
strcpy(pathname, dirname);
|
|
strcat(pathname, PATHNAME_SEP);
|
|
strcat(pathname, filename);
|
|
return (pathname);
|
|
}
|
|
|
|
/*
|
|
* Figure out the name of a default file (in the user's HOME directory).
|
|
*/
|
|
char *
|
|
homefile(filename)
|
|
char *filename;
|
|
{
|
|
char *p;
|
|
char *pathname;
|
|
|
|
if ((p = getenv("HOME")) != NULL && *p != '\0')
|
|
pathname = mkpathname(p, filename);
|
|
#if OS2
|
|
else if ((p = getenv("INIT")) != NULL && *p != '\0')
|
|
pathname = mkpathname(p, filename);
|
|
#endif
|
|
else
|
|
{
|
|
fprintf(stderr, "cannot find $HOME - using current directory\n");
|
|
pathname = mkpathname(".", filename);
|
|
}
|
|
return (pathname);
|
|
}
|
|
|
|
/*
|
|
* Parse command line arguments.
|
|
*/
|
|
void
|
|
parse_args(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
char *arg;
|
|
|
|
outfile = NULL;
|
|
while (--argc > 0)
|
|
{
|
|
arg = *++argv;
|
|
if (arg[0] != '-')
|
|
/* Arg does not start with "-"; it's not an option. */
|
|
break;
|
|
if (arg[1] == '\0')
|
|
/* "-" means standard input. */
|
|
break;
|
|
if (arg[1] == '-' && arg[2] == '\0')
|
|
{
|
|
/* "--" means end of options. */
|
|
argc--;
|
|
argv++;
|
|
break;
|
|
}
|
|
switch (arg[1])
|
|
{
|
|
case '-':
|
|
if (strncmp(arg, "--output", 8) == 0)
|
|
{
|
|
if (arg[8] == '\0')
|
|
outfile = &arg[8];
|
|
else if (arg[8] == '=')
|
|
outfile = &arg[9];
|
|
else
|
|
usage();
|
|
goto opt_o;
|
|
}
|
|
if (strcmp(arg, "--version") == 0)
|
|
{
|
|
goto opt_V;
|
|
}
|
|
usage();
|
|
break;
|
|
case 'o':
|
|
outfile = &argv[0][2];
|
|
opt_o:
|
|
if (*outfile == '\0')
|
|
{
|
|
if (--argc <= 0)
|
|
usage();
|
|
outfile = *(++argv);
|
|
}
|
|
break;
|
|
case 'V':
|
|
opt_V:
|
|
printf("lesskey version %s\n", version);
|
|
exit(0);
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
if (argc > 1)
|
|
usage();
|
|
/*
|
|
* Open the input file, or use DEF_LESSKEYINFILE if none specified.
|
|
*/
|
|
if (argc > 0)
|
|
infile = *argv;
|
|
else
|
|
infile = homefile(DEF_LESSKEYINFILE);
|
|
}
|
|
|
|
/*
|
|
* Initialize data structures.
|
|
*/
|
|
void
|
|
init_tables()
|
|
{
|
|
cmdtable.names = cmdnames;
|
|
cmdtable.pbuffer = cmdtable.buffer;
|
|
|
|
edittable.names = editnames;
|
|
edittable.pbuffer = edittable.buffer;
|
|
|
|
vartable.names = NULL;
|
|
vartable.pbuffer = vartable.buffer;
|
|
}
|
|
|
|
/*
|
|
* Parse one character of a string.
|
|
*/
|
|
char *
|
|
tstr(pp, xlate)
|
|
char **pp;
|
|
int xlate;
|
|
{
|
|
register char *p;
|
|
register char ch;
|
|
register int i;
|
|
static char buf[10];
|
|
static char tstr_control_k[] =
|
|
{ SK_SPECIAL_KEY, SK_CONTROL_K, 6, 1, 1, 1, '\0' };
|
|
|
|
p = *pp;
|
|
switch (*p)
|
|
{
|
|
case '\\':
|
|
++p;
|
|
switch (*p)
|
|
{
|
|
case '0': case '1': case '2': case '3':
|
|
case '4': case '5': case '6': case '7':
|
|
/*
|
|
* Parse an octal number.
|
|
*/
|
|
ch = 0;
|
|
i = 0;
|
|
do
|
|
ch = 8*ch + (*p - '0');
|
|
while (*++p >= '0' && *p <= '7' && ++i < 3);
|
|
*pp = p;
|
|
if (xlate && ch == CONTROL('K'))
|
|
return tstr_control_k;
|
|
buf[0] = ch;
|
|
buf[1] = '\0';
|
|
return (buf);
|
|
case 'b':
|
|
*pp = p+1;
|
|
return ("\b");
|
|
case 'e':
|
|
*pp = p+1;
|
|
buf[0] = ESC;
|
|
buf[1] = '\0';
|
|
return (buf);
|
|
case 'n':
|
|
*pp = p+1;
|
|
return ("\n");
|
|
case 'r':
|
|
*pp = p+1;
|
|
return ("\r");
|
|
case 't':
|
|
*pp = p+1;
|
|
return ("\t");
|
|
case 'k':
|
|
if (xlate)
|
|
{
|
|
switch (*++p)
|
|
{
|
|
case 'u': ch = SK_UP_ARROW; break;
|
|
case 'd': ch = SK_DOWN_ARROW; break;
|
|
case 'r': ch = SK_RIGHT_ARROW; break;
|
|
case 'l': ch = SK_LEFT_ARROW; break;
|
|
case 'U': ch = SK_PAGE_UP; break;
|
|
case 'D': ch = SK_PAGE_DOWN; break;
|
|
case 'h': ch = SK_HOME; break;
|
|
case 'e': ch = SK_END; break;
|
|
case 'x': ch = SK_DELETE; break;
|
|
default:
|
|
error("illegal char after \\k");
|
|
*pp = p+1;
|
|
return ("");
|
|
}
|
|
*pp = p+1;
|
|
buf[0] = SK_SPECIAL_KEY;
|
|
buf[1] = ch;
|
|
buf[2] = 6;
|
|
buf[3] = 1;
|
|
buf[4] = 1;
|
|
buf[5] = 1;
|
|
buf[6] = '\0';
|
|
return (buf);
|
|
}
|
|
/* FALLTHRU */
|
|
default:
|
|
/*
|
|
* Backslash followed by any other char
|
|
* just means that char.
|
|
*/
|
|
*pp = p+1;
|
|
buf[0] = *p;
|
|
buf[1] = '\0';
|
|
if (xlate && buf[0] == CONTROL('K'))
|
|
return tstr_control_k;
|
|
return (buf);
|
|
}
|
|
case '^':
|
|
/*
|
|
* Carat means CONTROL.
|
|
*/
|
|
*pp = p+2;
|
|
buf[0] = CONTROL(p[1]);
|
|
buf[1] = '\0';
|
|
if (buf[0] == CONTROL('K'))
|
|
return tstr_control_k;
|
|
return (buf);
|
|
}
|
|
*pp = p+1;
|
|
buf[0] = *p;
|
|
buf[1] = '\0';
|
|
if (xlate && buf[0] == CONTROL('K'))
|
|
return tstr_control_k;
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* Skip leading spaces in a string.
|
|
*/
|
|
public char *
|
|
skipsp(s)
|
|
register char *s;
|
|
{
|
|
while (*s == ' ' || *s == '\t')
|
|
s++;
|
|
return (s);
|
|
}
|
|
|
|
/*
|
|
* Skip non-space characters in a string.
|
|
*/
|
|
public char *
|
|
skipnsp(s)
|
|
register char *s;
|
|
{
|
|
while (*s != '\0' && *s != ' ' && *s != '\t')
|
|
s++;
|
|
return (s);
|
|
}
|
|
|
|
/*
|
|
* Clean up an input line:
|
|
* strip off the trailing newline & any trailing # comment.
|
|
*/
|
|
char *
|
|
clean_line(s)
|
|
char *s;
|
|
{
|
|
register int i;
|
|
|
|
s = skipsp(s);
|
|
for (i = 0; s[i] != '\n' && s[i] != '\r' && s[i] != '\0'; i++)
|
|
if (s[i] == '#' && (i == 0 || s[i-1] != '\\'))
|
|
break;
|
|
s[i] = '\0';
|
|
return (s);
|
|
}
|
|
|
|
/*
|
|
* Add a byte to the output command table.
|
|
*/
|
|
void
|
|
add_cmd_char(c)
|
|
int c;
|
|
{
|
|
if (currtable->pbuffer >= currtable->buffer + MAX_USERCMD)
|
|
{
|
|
error("too many commands");
|
|
exit(1);
|
|
}
|
|
*(currtable->pbuffer)++ = c;
|
|
}
|
|
|
|
/*
|
|
* Add a string to the output command table.
|
|
*/
|
|
void
|
|
add_cmd_str(s)
|
|
char *s;
|
|
{
|
|
for ( ; *s != '\0'; s++)
|
|
add_cmd_char(*s);
|
|
}
|
|
|
|
/*
|
|
* See if we have a special "control" line.
|
|
*/
|
|
int
|
|
control_line(s)
|
|
char *s;
|
|
{
|
|
#define PREFIX(str,pat) (strncmp(str,pat,strlen(pat)) == 0)
|
|
|
|
if (PREFIX(s, "#line-edit"))
|
|
{
|
|
currtable = &edittable;
|
|
return (1);
|
|
}
|
|
if (PREFIX(s, "#command"))
|
|
{
|
|
currtable = &cmdtable;
|
|
return (1);
|
|
}
|
|
if (PREFIX(s, "#env"))
|
|
{
|
|
currtable = &vartable;
|
|
return (1);
|
|
}
|
|
if (PREFIX(s, "#stop"))
|
|
{
|
|
add_cmd_char('\0');
|
|
add_cmd_char(A_END_LIST);
|
|
return (1);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Output some bytes.
|
|
*/
|
|
void
|
|
fputbytes(fd, buf, len)
|
|
FILE *fd;
|
|
char *buf;
|
|
int len;
|
|
{
|
|
while (len-- > 0)
|
|
{
|
|
fwrite(buf, sizeof(char), 1, fd);
|
|
buf++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Output an integer, in special KRADIX form.
|
|
*/
|
|
void
|
|
fputint(fd, val)
|
|
FILE *fd;
|
|
unsigned int val;
|
|
{
|
|
char c;
|
|
|
|
if (val >= KRADIX*KRADIX)
|
|
{
|
|
fprintf(stderr, "error: integer too big (%d > %d)\n",
|
|
val, KRADIX*KRADIX);
|
|
exit(1);
|
|
}
|
|
c = val % KRADIX;
|
|
fwrite(&c, sizeof(char), 1, fd);
|
|
c = val / KRADIX;
|
|
fwrite(&c, sizeof(char), 1, fd);
|
|
}
|
|
|
|
/*
|
|
* Find an action, given the name of the action.
|
|
*/
|
|
int
|
|
findaction(actname)
|
|
char *actname;
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; currtable->names[i].cn_name != NULL; i++)
|
|
if (strcmp(currtable->names[i].cn_name, actname) == 0)
|
|
return (currtable->names[i].cn_action);
|
|
error("unknown action");
|
|
return (A_INVALID);
|
|
}
|
|
|
|
void
|
|
error(s)
|
|
char *s;
|
|
{
|
|
fprintf(stderr, "line %d: %s\n", linenum, s);
|
|
errors++;
|
|
}
|
|
|
|
|
|
void
|
|
parse_cmdline(p)
|
|
char *p;
|
|
{
|
|
int cmdlen;
|
|
char *actname;
|
|
int action;
|
|
char *s;
|
|
char c;
|
|
|
|
/*
|
|
* Parse the command string and store it in the current table.
|
|
*/
|
|
cmdlen = 0;
|
|
do
|
|
{
|
|
s = tstr(&p, 1);
|
|
cmdlen += strlen(s);
|
|
if (cmdlen > MAX_CMDLEN)
|
|
error("command too long");
|
|
else
|
|
add_cmd_str(s);
|
|
} while (*p != ' ' && *p != '\t' && *p != '\0');
|
|
/*
|
|
* Terminate the command string with a null byte.
|
|
*/
|
|
add_cmd_char('\0');
|
|
|
|
/*
|
|
* Skip white space between the command string
|
|
* and the action name.
|
|
* Terminate the action name with a null byte.
|
|
*/
|
|
p = skipsp(p);
|
|
if (*p == '\0')
|
|
{
|
|
error("missing action");
|
|
return;
|
|
}
|
|
actname = p;
|
|
p = skipnsp(p);
|
|
c = *p;
|
|
*p = '\0';
|
|
|
|
/*
|
|
* Parse the action name and store it in the current table.
|
|
*/
|
|
action = findaction(actname);
|
|
|
|
/*
|
|
* See if an extra string follows the action name.
|
|
*/
|
|
*p = c;
|
|
p = skipsp(p);
|
|
if (*p == '\0')
|
|
{
|
|
add_cmd_char(action);
|
|
} else
|
|
{
|
|
/*
|
|
* OR the special value A_EXTRA into the action byte.
|
|
* Put the extra string after the action byte.
|
|
*/
|
|
add_cmd_char(action | A_EXTRA);
|
|
while (*p != '\0')
|
|
add_cmd_str(tstr(&p, 0));
|
|
add_cmd_char('\0');
|
|
}
|
|
}
|
|
|
|
void
|
|
parse_varline(p)
|
|
char *p;
|
|
{
|
|
char *s;
|
|
|
|
do
|
|
{
|
|
s = tstr(&p, 0);
|
|
add_cmd_str(s);
|
|
} while (*p != ' ' && *p != '\t' && *p != '=' && *p != '\0');
|
|
/*
|
|
* Terminate the variable name with a null byte.
|
|
*/
|
|
add_cmd_char('\0');
|
|
|
|
p = skipsp(p);
|
|
if (*p++ != '=')
|
|
{
|
|
error("missing =");
|
|
return;
|
|
}
|
|
|
|
add_cmd_char(EV_OK|A_EXTRA);
|
|
|
|
p = skipsp(p);
|
|
while (*p != '\0')
|
|
{
|
|
s = tstr(&p, 0);
|
|
add_cmd_str(s);
|
|
}
|
|
add_cmd_char('\0');
|
|
}
|
|
|
|
/*
|
|
* Parse a line from the lesskey file.
|
|
*/
|
|
void
|
|
parse_line(line)
|
|
char *line;
|
|
{
|
|
char *p;
|
|
|
|
/*
|
|
* See if it is a control line.
|
|
*/
|
|
if (control_line(line))
|
|
return;
|
|
/*
|
|
* Skip leading white space.
|
|
* Replace the final newline with a null byte.
|
|
* Ignore blank lines and comments.
|
|
*/
|
|
p = clean_line(line);
|
|
if (*p == '\0')
|
|
return;
|
|
|
|
if (currtable == &vartable)
|
|
parse_varline(p);
|
|
else
|
|
parse_cmdline(p);
|
|
}
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
FILE *desc;
|
|
FILE *out;
|
|
char line[1024];
|
|
|
|
#ifdef WIN32
|
|
if (getenv("HOME") == NULL)
|
|
{
|
|
/*
|
|
* If there is no HOME environment variable,
|
|
* try the concatenation of HOMEDRIVE + HOMEPATH.
|
|
*/
|
|
char *drive = getenv("HOMEDRIVE");
|
|
char *path = getenv("HOMEPATH");
|
|
if (drive != NULL && path != NULL)
|
|
{
|
|
char *env = (char *) calloc(strlen(drive) +
|
|
strlen(path) + 6, sizeof(char));
|
|
strcpy(env, "HOME=");
|
|
strcat(env, drive);
|
|
strcat(env, path);
|
|
putenv(env);
|
|
}
|
|
}
|
|
#endif /* WIN32 */
|
|
|
|
/*
|
|
* Process command line arguments.
|
|
*/
|
|
parse_args(argc, argv);
|
|
init_tables();
|
|
|
|
/*
|
|
* Open the input file.
|
|
*/
|
|
if (strcmp(infile, "-") == 0)
|
|
desc = stdin;
|
|
else if ((desc = fopen(infile, "r")) == NULL)
|
|
{
|
|
#if HAVE_PERROR
|
|
perror(infile);
|
|
#else
|
|
fprintf(stderr, "Cannot open %s\n", infile);
|
|
#endif
|
|
usage();
|
|
}
|
|
|
|
/*
|
|
* Read and parse the input file, one line at a time.
|
|
*/
|
|
errors = 0;
|
|
linenum = 0;
|
|
while (fgets(line, sizeof(line), desc) != NULL)
|
|
{
|
|
++linenum;
|
|
parse_line(line);
|
|
}
|
|
|
|
/*
|
|
* Write the output file.
|
|
* If no output file was specified, use "$HOME/.less"
|
|
*/
|
|
if (errors > 0)
|
|
{
|
|
fprintf(stderr, "%d errors; no output produced\n", errors);
|
|
exit(1);
|
|
}
|
|
|
|
if (outfile == NULL)
|
|
outfile = getenv("LESSKEY");
|
|
if (outfile == NULL)
|
|
outfile = homefile(LESSKEYFILE);
|
|
if ((out = fopen(outfile, "wb")) == NULL)
|
|
{
|
|
#if HAVE_PERROR
|
|
perror(outfile);
|
|
#else
|
|
fprintf(stderr, "Cannot open %s\n", outfile);
|
|
#endif
|
|
exit(1);
|
|
}
|
|
|
|
/* File header */
|
|
fputbytes(out, fileheader, sizeof(fileheader));
|
|
|
|
/* Command key section */
|
|
fputbytes(out, cmdsection, sizeof(cmdsection));
|
|
fputint(out, cmdtable.pbuffer - cmdtable.buffer);
|
|
fputbytes(out, (char *)cmdtable.buffer, cmdtable.pbuffer-cmdtable.buffer);
|
|
/* Edit key section */
|
|
fputbytes(out, editsection, sizeof(editsection));
|
|
fputint(out, edittable.pbuffer - edittable.buffer);
|
|
fputbytes(out, (char *)edittable.buffer, edittable.pbuffer-edittable.buffer);
|
|
|
|
/* Environment variable section */
|
|
fputbytes(out, varsection, sizeof(varsection));
|
|
fputint(out, vartable.pbuffer - vartable.buffer);
|
|
fputbytes(out, (char *)vartable.buffer, vartable.pbuffer-vartable.buffer);
|
|
|
|
/* File trailer */
|
|
fputbytes(out, endsection, sizeof(endsection));
|
|
fputbytes(out, filetrailer, sizeof(filetrailer));
|
|
return (0);
|
|
}
|