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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <error.h>
include <syserr.h>
include <ctype.h>
include "imx.h"
define DEBUG FALSE
# IMXOPEN -- Open an image template using the enhanced expansion
# capabilities. This procedure is simply the entry point to the imtopen()
# method in the standard IMT interface.
pointer procedure imxopen (template)
char template[ARB] # image template
int i, sort, level, ip, ch, expand, nchars, nimages, index, type
int max_fnt, fnt_len, len, flen
pointer listp, intmp, fnt, op, exp
char lfile[SZ_LINE], lexpr[SZ_LINE], likparams[SZ_LINE], lsec[SZ_LINE]
char lindex[SZ_LINE], lextname[SZ_LINE], lextver[SZ_LINE], elem[SZ_LINE]
pointer imx_preproc (), imx_imexpand (), imx_fexpand ()
pointer imx_texpand (), imx_dexpand ()
int imx_filetype (), imx_parse (), imx_get_element ()
int fntopnb (), strlen (), strsearch()
int sum, fntlenb()
bool envgetb()
define output {Memc[op]=$1;op=op+1}
define escape {output('\\');output($1)}
begin
# Pre-process the input template.
intmp = imx_preproc (template)
if (DEBUG) {
call eprintf ("template: '%s'\npreproc: '%s'\n\n")
call pargstr (template)
call pargstr (Memc[intmp])
}
fnt_len = 0 # initialize
max_fnt = SZ_FNT
call calloc (fnt, max_fnt, TY_CHAR)
# Sorting is disabled as input and output templates, derived from the
# same database but with string editing used to modify the output list,
# may be sorted differently as sorting is performed upon the edited
# output list.
sort = NO
op = fnt
ip = intmp
for (ip=intmp; Memc[ip] != EOS; ip=ip+1) {
ch = Memc[ip]
if (ch == '[') {
if (ip > 1 && Memc[ip-1] == '!') {
# ![ -- Pass a [ to FNT (character class notation).
Memc[op-1] = '['
} else if (ip > 1 && Memc[ip-1] == '\\') {
# \[ -- The [ is part of the filename. Pass it on as an
# escape sequence to get by the FNT.
output ('[')
} else {
# [ -- Unescaped [. This marks the beginning of an image
# section sequence. Output `%%[...]%' and escape all
# pattern matching metacharacters until a comma template
# delimiter is encountered. Note that a comma within []
# is not a template delimiter.
output ('%')
output ('%')
output (CH_DELIM)
level = 0
for (; Memc[ip] != EOS; ip=ip+1) {
ch = Memc[ip]
if (ch == ',') { # ,
if (level <= 0)
break # exit loop
else {
escape (ch)
}
} else if (ch == '[') { # [
escape (ch)
level = level + 1
} else if (ch == ']') { # ]
output (ch)
level = level - 1
} else if (ch == '*') { # *
escape (ch)
} else # normal chars
output (ch)
}
output ('%')
ip = ip - 1
}
} else if (ch == '@') {
# List file reference. Output the CH_DELIM code before the @
# to prevent further translations on the image section names
# returned from the list file, e.g., "CH_DELIM // @listfile".
# See if we're asking to expand the contents of the file,
# e.g. as in "@@listfile" where 'listfile' contains MEFs
# or tables we later expand.
expand = NO
if (Memc[ip+1] == '@')
expand = YES
# Break out the listfile from the filtering expression.
index = 1
nchars = imx_get_element (Memc[ip], index, elem, SZ_LINE)
ip = ip + strlen(elem) - 1
nchars = imx_parse (elem, lfile, lindex, lextname,
lextver, lexpr, lsec, likparams, SZ_LINE)
if (DEBUG) {
call eprintf ("imtopen: lfile='%s' lexpr='%s' ip='%s'\n")
call pargstr (lfile)
call pargstr (lexpr)
call pargstr (Memc[ip])
}
exp = NULL
type = imx_filetype (lfile)
switch (type) {
case IMT_IMAGE:
exp = imx_imexpand (lfile, lexpr, lindex, lextname, lextver,
likparams, lsec, nimages)
case IMT_TABLE:
case IMT_VOTABLE:
exp = imx_texpand (lfile, type, lexpr, lindex, "", nimages)
case IMT_FILE:
if (strsearch (lfile, "//") > 0) {
call calloc (exp, SZ_FNAME, TY_CHAR)
call strcpy (lfile, Memc[exp], SZ_FNAME)
nimages = 1
} else if (lfile[1] == '@' && strsearch(lfile, "//") == 0) {
exp = imx_fexpand (lfile[2], lexpr, lindex, lextname,
lextver, likparams, lsec, nimages)
# if (nimages > 0) {
# output (CH_DELIM); output ('/'); output ('/')
# }
} else {
call calloc (exp, SZ_FNAME, TY_CHAR)
call strcpy (lfile, Memc[exp], SZ_FNAME)
nimages = 1
}
case IMT_DIR:
exp = imx_dexpand (lfile, lexpr, lindex, lextname, lextver,
likparams, lsec, nimages)
}
if (DEBUG) {
call eprintf ("expand: exp='%s' len=%d nim=%d\n")
call pargstr (Memc[exp])
call pargi (strlen(Memc[exp]))
call pargi (nimages)
}
# Copy to the output template string.
len = strlen (Memc[exp])
if (nimages > 0) {
if ((fnt_len + len) >= max_fnt) {
max_fnt = max_fnt + len + 1
if (fnt != NULL)
call realloc (fnt, max_fnt, TY_CHAR)
else
call calloc (fnt, max_fnt, TY_CHAR)
op = fnt
if (fnt_len > 0)
op = fnt + strlen (Memc[fnt])
}
for (i=0; i < len; i=i+1)
output (Memc[exp+i])
Memc[op+1] = EOS
fnt_len = fnt_len + strlen (Memc[exp])
}
if (exp != NULL)
call mfree (exp, TY_CHAR)
nimages = 0
} else
output (ch)
}
output ('\0')
Memc[op] = EOS
# Clean up the expanded template string in case there were selection
# filters that rejected images and we have extra commas in the string.
len = strlen (Memc[fnt])
if (Memc[fnt+len-1] == ',') { # kill trailing commas
for (ip=fnt+len-1; Memc[ip] == ',' && ip >= fnt; ip=ip-1)
Memc[ip] = '\0'
}
if (Memc[fnt] == ',') {
for (ip=fnt; Memc[ip] == ','; ) # skip leading commas
ip = ip + 1
for (op=fnt; Memc[ip] != EOS; ip=ip+1) {
Memc[op] = Memc[ip]
op = op + 1
}
Memc[op] = '\0'
}
if (DEBUG) {
call eprintf ("imxopen: fnt='%s'\n")
call pargstr (Memc[fnt])
}
# Open the template string using the filename list.
listp = fntopnb (Memc[fnt], sort)
# Clean up.
call mfree (fnt, TY_CHAR)
call mfree (intmp, TY_CHAR)
return (listp)
end
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