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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <syserr.h>
include "idbc.h"
# IMPCOM -- Change the comment field for a keyword.
procedure impcom (im, key, comment)
pointer im #I image descriptor
char key[ARB] #I parameter to be set
char comment[ARB] #I comment string
bool string_valued
int ch, i, ti, j
pointer rp, ip, op, sp, val, start, text, cmmt
int idb_findrecord()
errchk syserrs
begin
call smark (sp)
call salloc (val, SZ_LINE, TY_CHAR)
call salloc (text, SZ_LINE, TY_CHAR)
call salloc (cmmt, SZ_LINE, TY_CHAR)
# Find the record.
if (idb_findrecord (im, key, rp) == 0)
call syserrs (SYS_IDBKEYNF, key)
# Determine the actual datatype of the parameter. String valued
# parameters will have an apostrophe in the first nonblank column
# of the value field.
string_valued = false
ti = text
for (ip=IDB_STARTVALUE; ip <= IDB_ENDVALUE; ip=ip+1) {
# Skip leading whitespace.
for (; Memc[rp+ip-1] == ' '; ip=ip+1) {
Memc[ti] = Memc[rp+ip-1]
ti = ti + 1
}
if (Memc[rp+ip-1] == '\'') {
# Get string value.
Memc[ti] = Memc[rp+ip-1]
ti = ti + 1
do i = ip, IDB_RECLEN {
ch = Memc[rp+i]
Memc[ti] = ch
ti = ti + 1
if (ch == '\n')
break
if (ch == '\'')
break
}
do j = i, IDB_ENDVALUE-2 {
Memc[ti] = ' ' ; ti=ti+1
}
break
} else {
# Skip numeric value.
do i = ip, IDB_RECLEN {
ch = Memc[rp+i-1]
Memc[ti] = ch
ti = ti + 1
if (ch == '\n' || ch == ' ' || ch == '/')
break
}
if (ch == ' ')
ti = ti - 1
do j = i, IDB_ENDVALUE {
Memc[ti] = ' ' ; ti=ti+1
}
break
}
}
Memc[ti]=EOS
if (comment[1] != EOS) {
call strcat (" / ", Memc[ti], SZ_LINE)
for (i=1; comment[i] == ' '; i=i+1)
;
call strcat (comment[i], Memc[ti], SZ_LINE)
} else {
do j = i, IDB_RECLEN {
Memc[ti] = ' ' ; ti=ti+1
}
}
# Update the parameter value.
op = rp + IDB_STARTVALUE + ti-text - 1
start = op
for (ip=ti; Memc[ip] != EOS && Memc[op] != '\n'; ip=ip+1) {
Memc[op] = Memc[ip]
op = op + 1
}
call sfree (sp)
end
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