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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <ctype.h>
include <ctotok.h>
define SZ_LBUF 1024
define MAX_TAGS 8192
define SZ_SBUF 256000
define TAGSFILE "tags"
# TG_COMPARE -- String compare of two tags.
int procedure tg_compare (s1, s2)
int s1 # t_sort index of string 1
int s2 # t_sort index of string 2
int ntags
pointer tg_op
pointer tg_sbuf
pointer tg_tag[MAX_TAGS]
pointer tg_file[MAX_TAGS]
pointer tg_lnum[MAX_TAGS]
pointer tg_lbuf[MAX_TAGS]
int tg_sort[MAX_TAGS]
common /tagcom/ ntags, tg_op, tg_sbuf, tg_tag, tg_file, tg_lnum, tg_lbuf,
tg_sort
int strncmp()
begin
return (strncmp (Memc[tg_tag[s1]], Memc[tg_tag[s2]], ARB))
end
# TG_PUTSTR -- Add a string to the string buffer and return a pointer to
# the beginning of the string.
pointer procedure tg_putstr (str)
char str[ARB] # string to be appended
int nchars
pointer newstr
int strlen()
int ntags
pointer tg_op
pointer tg_sbuf
pointer tg_tag[MAX_TAGS]
pointer tg_file[MAX_TAGS]
pointer tg_lnum[MAX_TAGS]
pointer tg_lbuf[MAX_TAGS]
int tg_sort[MAX_TAGS]
common /tagcom/ ntags, tg_op, tg_sbuf, tg_tag, tg_file, tg_lnum, tg_lbuf,
tg_sort
begin
nchars = strlen (str)
newstr = tg_op
if (tg_op - tg_sbuf + nchars >= SZ_SBUF)
call error (2, "out of string buffer space")
call strcpy (str, Memc[newstr], nchars)
tg_op = tg_op + nchars + 1
return (newstr)
end
# TG_GETLONGLINE -- Get a long line, i.e., a logical line possibly spanning
# several physical lines with the newlines escaped at the ends. Skip
# comment lines and .help sections.
int procedure tg_getlongline (fd, obuf, maxch, linenum)
int fd # input file
char obuf[ARB] # output buffer
int maxch
int linenum
int op, status
int getline(), strncmp()
begin
op = 1
while (maxch - op + 1 >= SZ_LINE) {
# Get next non-comment line.
repeat {
status = getline (fd, obuf[op])
linenum = linenum + 1
if (status == EOF) {
break
} else if (obuf[op] == '#') {
next
} else if (obuf[op] == '.') {
# Skip help sections.
if (strncmp (obuf[op], ".help", 5) == 0) {
repeat {
status = getline (fd, obuf[op])
linenum = linenum + 1
if (status == EOF)
break
if (strncmp (obuf[op], ".endhelp", 8) == 0)
break
}
} else
break
} else
break
}
if (status == EOF) {
if (op == 1)
return (EOF)
else
return (op - 1)
} else
op = op + status
if (obuf[op-2] == '\\' && obuf[op-1] == '\n')
op = op - 2
else
break
}
return (op - 1)
end
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