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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
# General text database routines.
# Symbol table definitions.
define LEN_INDEX 10 # Length of symtab index
define LEN_STAB 512 # Length of symtab
define SZ_SBUF 512 # Size of symtab string buffer
define SYMLEN 40 # Length of symbol structure
define SZ_DBVAL 79 # Size of database value string
# Symbol table structure
define DBVAL Memc[P2C($1)] # Database value string
# DBOPEN -- Open database and store the requested information in symbol table.
pointer procedure dbopen (dname, fname, kname, ename)
char dname[ARB] #I Directory name
char fname[ARB] #I File name
char kname[ARB] #I Key name
char ename[ARB] #I Entry name
pointer db #O Database symbol table pointer
int fd, found, open(), fscan(), nscan()
pointer sp, pname, name, key, str, sym
pointer stopen(), stenter()
bool streq(), strne()
errchk open, stopen, stenter, fscan, dberror
begin
call smark (sp)
call salloc (pname, SZ_FNAME, TY_CHAR)
call salloc (name, SZ_LINE, TY_CHAR)
call salloc (key, SZ_FNAME, TY_CHAR)
call salloc (str, SZ_LINE, TY_CHAR)
# Open database.
call sprintf (Memc[pname], SZ_FNAME, "%s%s")
call pargstr (dname)
call pargstr (fname)
fd = open (Memc[pname], READ_ONLY, TEXT_FILE)
# Strip entry name whitespace and convert to lower case.
call strcpy (ename, Memc[name], SZ_LINE)
call xt_stripwhite (Memc[name])
call strlwr (Memc[name])
# List entries in database.
if (Memc[name] == '?') {
Call printf ("Entries for %s in database %s:\n")
call pargstr (kname)
call pargstr (Memc[pname])
while (fscan (fd) != EOF) {
call gargwrd (Memc[key], SZ_FNAME)
call gargwrd (Memc[str], SZ_LINE)
call gargwrd (Memc[str], SZ_LINE)
if (nscan()<3 || Memc[key]=='#' || strne (Memc[key], kname))
next
call printf ("\t%s\n")
call pargstr (Memc[str])
}
call close (fd)
call sfree (sp)
return (NULL)
}
# Find entry.
found = 0
while (fscan (fd) != EOF) {
call gargwrd (Memc[key], SZ_FNAME)
call gargwrd (Memc[str], SZ_LINE)
call gargwrd (Memc[str], SZ_LINE)
if (nscan()<3 || Memc[key]=='#' || strne (Memc[key], kname))
next
found = 1
call strlwr (Memc[str])
if (streq (Memc[str], Memc[name])) {
found = 2
break
}
}
# Check if entry was found.
if (found != 2) {
call close (fd)
if (found != 1)
call dberror ("DBOPEN: Database entry not found", kname)
else
call dberror ("DBOPEN: Database entry not found", ename)
}
# Create symbol table.
db = stopen (ename, LEN_INDEX, LEN_STAB, SZ_SBUF)
# Read the file and enter the parameters in the symbol table.
sym = stenter (db, Memc[key], SYMLEN)
call strcpy (ename, DBVAL(sym), SZ_DBVAL)
while (fscan(fd) != EOF) {
call gargwrd (Memc[key], SZ_FNAME)
call gargwrd (Memc[str], SZ_LINE)
call gargwrd (Memc[str], SZ_LINE)
if (nscan()>0 && (streq(Memc[key],"end") || streq(Memc[key],kname)))
break
if (nscan() < 3 || Memc[key] == '#')
next
sym = stenter (db, Memc[key], SYMLEN)
call strcpy (Memc[str], DBVAL(sym), SZ_DBVAL)
}
call close (fd)
call sfree (sp)
return (db)
end
# DBCLOSE -- Close the database symbol table pointer.
procedure dbclose (db)
pointer db # Database symbol table pointer
begin
if (db != NULL)
call stclose (db)
end
# DBGETD -- Get double database parameter.
double procedure dbgetd (db, param, arg1, arg2)
pointer db # Database symbol table pointer
char param[ARB] # Database parameter
char arg1[ARB], arg2[ARB] # Optional arguments
char str[SZ_LINE]
int ip, ctod()
double dval
errchk dbgstr
begin
call dbgstr (db, param, arg1, arg2, str, SZ_LINE)
ip = 1
if (ctod (str, ip, dval) <= 0)
call dberror ("DBGETD: Database parameter not double", param)
return (dval)
end
# DBGSTR -- Get string valued parameter.
procedure dbgstr (db, param, arg1, arg2, str, maxchar)
pointer db # Database symbol table pointer
char param[ARB] # Database parameter
char arg1[ARB], arg2[ARB] # Optional arguments
char str[maxchar] # Database parameter value
int maxchar # Maximum characters for string
pointer sp, param1, sym, stfind()
errchk dberror
begin
call smark (sp)
call salloc (param1, SZ_LINE, TY_CHAR)
sym = NULL
if (arg1[1] != EOS && arg2[1] != EOS) {
call sprintf (Memc[param1], SZ_LINE, "%s(%s,%s)")
call pargstr (param)
call pargstr (arg1)
call pargstr (arg2)
sym = stfind (db, Memc[param1])
if (sym == NULL) {
call sprintf (Memc[param1], SZ_LINE, "%s(%s,%s)")
call pargstr (param)
call pargstr (arg2)
call pargstr (arg1)
sym = stfind (db, Memc[param1])
}
}
if (sym == NULL && arg1[1] != EOS) {
call sprintf (Memc[param1], SZ_LINE, "%s(%s)")
call pargstr (param)
call pargstr (arg1)
sym = stfind (db, Memc[param1])
}
if (sym == NULL && arg2[1] != EOS) {
call sprintf (Memc[param1], SZ_LINE, "%s(%s)")
call pargstr (param)
call pargstr (arg2)
sym = stfind (db, Memc[param1])
}
if (sym == NULL)
sym = stfind (db, param)
call sfree (sp)
if (sym == NULL)
call dberror ("DBGSTR: Database parameter not found", param)
call strcpy (DBVAL(sym), str, maxchar)
end
# DBERROR -- Print database error.
procedure dberror (errstr, param)
char errstr[ARB] # Error string
char param[ARB] # Parameter
char errmsg[SZ_LINE] # Error message
begin
call sprintf (errmsg, SZ_LINE, "%s (%s)")
call pargstr (errstr)
call pargstr (param)
call error (1, errmsg)
end
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