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include <tbset.h>
include "screen.h"
include "table.h"
include "field.h"
# CREATE_TABLE -- Create a new table
procedure create_table (name, tptr)
char name[ARB] # i: Table name
pointer tptr # o: Table pointer
#--
int code, type
pointer sp, cp, cname, cunits, ftnfmt, sppfmt, ctype, errmsg
string newtable "Table does not exist. Create it?"
string notable "Task exit. Table does not exist."
string nocreate "Could not create table"
string nocolumn "Could not create column"
string colprompt "Column name? (Press return to exit)"
bool bool_prompt()
int errget()
pointer tbtopn()
begin
if (! bool_prompt (newtable))
call err1_prompt (notable)
call smark (sp)
call salloc (cname, SZ_COLNAME, TY_CHAR)
call salloc (cunits, SZ_COLUNITS, TY_CHAR)
call salloc (ftnfmt, SZ_COLFMT, TY_CHAR)
call salloc (sppfmt, SZ_COLFMT, TY_CHAR)
call salloc (ctype, SZ_FNAME, TY_CHAR)
call salloc (errmsg, SZ_LINE, TY_CHAR)
iferr {
tptr = tbtopn (name, NEW_FILE, NULL)
} then {
code = errget (Memc[errmsg], SZ_LINE)
call err2_prompt (nocreate, Memc[errmsg])
}
# Get parameters defining each column
repeat {
call read_prompt (colprompt, Memc[cname], SZ_COLNAME)
if (Memc[cname] == EOS)
break
repeat {
call read_prompt ("Column type? (r,d,i,b,ch*n)",
Memc[ctype], SZ_FNAME)
iferr (call tbbtyp (Memc[ctype], type)) {
call ring_bell
} else {
break
}
}
repeat {
call read_prompt ("Column format?", Memc[ftnfmt], SZ_COLFMT)
call tbbftp (Memc[ftnfmt], Memc[sppfmt])
if (Memc[sppfmt] == EOS && Memc[ftnfmt] != EOS) {
call ring_bell
} else {
break
}
}
call read_prompt ("Column units?", Memc[cunits], SZ_COLUNITS)
# Add new column to table
iferr {
call tbcdef (tptr, cp, Memc[cname], Memc[cunits],
Memc[sppfmt], type, 1, 1)
} then {
code = errget (Memc[errmsg], SZ_LINE)
call err2_prompt (nocolumn, Memc[errmsg])
}
}
iferr {
call tbtcre (tptr)
} then {
code = errget (Memc[errmsg], SZ_LINE)
call err2_prompt (nocreate, Memc[errmsg])
}
# Add an empty row to the table
call tbtwer (tptr, 1)
call sfree (sp)
end
# MAP_TABLE -- Map a table into a descriptor so that it can be edited
pointer procedure map_table (scr, table, columns, rdonly, inplace)
pointer scr # i: Screen descriptor
char table[ARB] # i: SDAS table name
char columns[ARB] # i: list of columns to edit
bool rdonly # i: edit table read only
bool inplace # i: edit table in place
#--
bool place, new
int dirty, numcol, numrow, numptr, iptr
int height, width, maxcol, clen
pointer sp, tabname, filename, ext, cname, tptr, tab
string notable "Table does not exist"
string nowrite "No write access to table"
string nocols "Column names not found in table"
string emptytab "Table is empty"
int access(), tbtacc(), tbpsta()
int tbcigi(), strlen(), btoi()
begin
# Allocate dynamic memory for temporary names
call smark (sp)
call salloc (tabname, SZ_FNAME, TY_CHAR)
call salloc (filename, SZ_FNAME, TY_CHAR)
call salloc (ext, SZ_COLNAME, TY_CHAR)
call salloc (cname, SZ_COLNAME, TY_CHAR)
# Get filename from table name
call tbfile (table, Memc[tabname], Memc[filename], Memc[ext], SZ_FNAME)
# Check table permissions
if (tbtacc (table) == NO) {
dirty = YES
place = true
new = true
call create_table (table, tptr)
call strcpy (table, Memc[filename], SZ_FNAME)
} else {
dirty = NO
place = inplace
new = false
if (access (Memc[filename], READ_WRITE, 0) == NO && ! rdonly)
call err2_prompt (nowrite, table)
call tu_open (table, "ted", rdonly, inplace,
tptr, Memc[filename], SZ_FNAME)
}
# Allocate descriptor
numcol = tbpsta (tptr, TBL_NCOLS)
numrow = tbpsta (tptr, TBL_NROWS)
call malloc (tab, TED_TABLEN, TY_STRUCT)
call malloc (TED_NAMEPTR(tab), SZ_FNAME, TY_CHAR)
call malloc (TED_COLARY(tab), numcol, TY_INT)
call malloc (TED_TYPARY(tab), numcol, TY_INT)
call malloc (TED_LENARY(tab), numcol, TY_INT)
# Fill in scalar fields
TED_READONLY(tab) = btoi (rdonly)
TED_NEWTAB(tab) = btoi (new)
TED_INPLACE(tab) = btoi (place)
TED_DIRTY(tab) = dirty
TED_TABPTR(tab) = tptr
# Set the width and height of the label area surrounding
# the table display
TED_LABWIDTH(tab) = log10 (real(numrow + 1000)) + 1.0
TED_LABWIDTH(tab) = max (6, TED_LABWIDTH(tab))
TED_LABHEIGHT(tab) = 2
call strcpy (Memc[filename], TED_TABNAME(tab), SZ_FNAME)
# Get vector fields (column pointers, types, and lengths)
call tctexp (tptr, columns, numcol, numptr, TED_COLPTR(tab,1))
TED_NCOLS(tab) = numptr
if (numptr == 0) {
call err2_prompt (nocols, columns)
} else if (numcol == numptr) {
TED_ALLCOLS(tab) = YES
} else {
TED_ALLCOLS(tab) = NO
}
call wdimen (TED_WINDOW(scr), height, width)
maxcol = width - (TED_LABWIDTH(tab) + 2)
do iptr = 1, numptr {
TED_COLTYPE(tab,iptr) = tbcigi (TED_COLPTR(tab,iptr),
TBL_COL_DATATYPE)
clen = tbcigi (TED_COLPTR(tab,iptr), TBL_COL_FMTLEN)
call tbcigt (TED_COLPTR(tab,iptr), TBL_COL_NAME,
Memc[cname], SZ_COLNAME)
TED_COLLEN(tab,iptr) = min (maxcol, max (clen,
strlen (Memc[cname])))
}
# Check to see if table is empty
# Write a single blank row unless table is read only
if (numrow < 1 ) {
if (rdonly) {
call err2_prompt (emptytab, table)
} else {
TED_DIRTY(tab) = YES
call tbtwer (tptr, 1)
}
}
# Return pointer to descriptor
call sfree (sp)
return (tab)
end
# UNMAP_TABLE -- Release table descriptor
procedure unmap_table (scr, tab, force)
pointer scr # i: Currently active screen
pointer tab # i: Table descriptor
int force # i: Force unmap if table is dirty
#--
bool quit
pointer sp, table
begin
# Allocate memory for strings
call smark (sp)
call salloc (table, SZ_FNAME, TY_CHAR)
# Close table if still open and delete if
# it was a new table that was not written or not in place
if (TED_TABPTR(tab) != NULL) {
quit = TED_NEWTAB(tab) == YES || TED_INPLACE(tab) == NO
call tbtnam (TED_TABPTR(tab), Memc[table], SZ_FNAME)
call tu_close (TED_TABPTR(tab), TED_INPLACE(tab),
quit, Memc[table])
}
# Free descriptor
call mfree (TED_NAMEPTR(tab), TY_CHAR)
call mfree (TED_COLARY(tab), TY_INT)
call mfree (TED_TYPARY(tab), TY_INT)
call mfree (TED_LENARY(tab), TY_INT)
call mfree (tab, TY_STRUCT)
call sfree (sp)
end
# WRT_TABLE -- Close table and write back to original file
procedure wrt_table (scr, tab)
pointer scr # i: Currently active screen
pointer tab # i: Table descriptor
#--
bool quit
pointer sp, table
string noname "Could not rename new table, it has this temporary name"
begin
# Return if table already written
if (TED_TABPTR(tab) == NULL)
return
# Allocate memory for strings
call smark (sp)
call salloc (table, SZ_FNAME, TY_CHAR)
# Get current file name, then close table
quit = TED_INPLACE(tab) == NO && TED_DIRTY(tab) == NO
call strcpy (TED_TABNAME(tab), Memc[table], SZ_FNAME)
iferr {
call tu_close (TED_TABPTR(tab), TED_INPLACE(tab),
quit, Memc[table])
} then {
call warn2_prompt (scr, noname, Memc[table])
TED_INPLACE(tab) = YES
}
# Set table pointer to NULL and set newtab to NO, to mark it as written
TED_TABPTR(tab) = NULL
TED_NEWTAB(tab) = NO
call sfree (sp)
end
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