libterminfo: cast to uint16/32_t before conversion to preserve negativity

Otherwise the ABSENT_NUMERIC(-1) or CANCELLED_NUMERIC(-2) will be converted
incorrectly to size_t and then down to uint16/32_t.
Picked up by DIAGNOSTIC builds.

Thanks to Michael Forney for the fix for PR lib/52293.

terminfo: Add guards to optionally build parts of libterminfo

Reading from a database is now optional.
Compiling terminfo descriptions (including from $TERMINFO) is now optional.
Compat support is now optional.

This removes 17k on amd64 from the binary size, which allows it to be used
again on space constrained ramdisks.

terminfo: satisfy gcc bitching

terminfo: v3 records should create v3 aliases

terminfo: Promote a terminfo description to v3 when required

Blindly scanning the capabilities for # and checking that the following
number is bigger than a short isn't reliable because this could be a
string value:

SomeString#1234

Instead, if we process the numeric as normal and if it's value is too big
for v1 then promote the record to v3.

terminfo: allow _ti_getname to convert from and to any version

PR/55118: Andreas Gustafsson: Oops, set the right flag variable.

terminfo: Add a comment for prior change.

terminfo: use , as a record version delimiter rather than @

@ is allowed in a terminfo description, but a comma is not.

support for older compilers

Introduce a bunch of inline functions and utilities to avoid code duplication.

As described in tech-userlevel:
- Modify the writing code to only write entries in the new
format for the terminal descriptions that require it.
- Store new format entries as <name>@v3
- Store old format entries with clamped values as <name> for
backwards compatibility
- Lookup first <name>@v3 and then <name> if that is not found.
- Don't create terminfo2 anymore; old programs keep working with
clamped entries, and new programs be able to use the wide
fields with using the original db file.

terminfo: promote numeric parameters from short to int

POSIX mandates implementations must support upto a short but may exceed it.
When NetBSD terminfo was implemented, no terminfo description used over
a short, but because ncurses has supported ints for some time, some now do.

Infact, such a terminfo description was imported where colour pairs for
screen-256color went up to 65536 which exposed a bug in the existing
implementation where it set to zero. Because the number might mean
something more than a range, we need to be able to store it accurately.

This requires a version bump because whilst the API hasn't changed thanks
to C int promotion, the ABI has. Also the underlying database structure
has changed as well - we now store the numeric paramter inside a uint32_t
field rather than a uint16_t one.
Whilst this change can still read the old style database, the old one
cannot read the new one and thus we now maintain the database as
terminfo2.cdb, leaving the old library and database alone so old programs
still work fine.

libcurses, libfrom, libmenu and libpanel have also been bumped to
accomoate this change.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

branches: 1.12.10;
Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

terminfo: Add guards to optionally build parts of libterminfo

Reading from a database is now optional.
Compiling terminfo descriptions (including from $TERMINFO) is now optional.
Compat support is now optional.

This removes 17k on amd64 from the binary size, which allows it to be used
again on space constrained ramdisks.

terminfo: satisfy gcc bitching

terminfo: v3 records should create v3 aliases

terminfo: Promote a terminfo description to v3 when required

Blindly scanning the capabilities for # and checking that the following
number is bigger than a short isn't reliable because this could be a
string value:

SomeString#1234

Instead, if we process the numeric as normal and if it's value is too big
for v1 then promote the record to v3.

terminfo: allow _ti_getname to convert from and to any version

PR/55118: Andreas Gustafsson: Oops, set the right flag variable.

terminfo: Add a comment for prior change.

terminfo: use , as a record version delimiter rather than @

@ is allowed in a terminfo description, but a comma is not.

support for older compilers

Introduce a bunch of inline functions and utilities to avoid code duplication.

As described in tech-userlevel:
- Modify the writing code to only write entries in the new
format for the terminal descriptions that require it.
- Store new format entries as <name>@v3
- Store old format entries with clamped values as <name> for
backwards compatibility
- Lookup first <name>@v3 and then <name> if that is not found.
- Don't create terminfo2 anymore; old programs keep working with
clamped entries, and new programs be able to use the wide
fields with using the original db file.

terminfo: promote numeric parameters from short to int

POSIX mandates implementations must support upto a short but may exceed it.
When NetBSD terminfo was implemented, no terminfo description used over
a short, but because ncurses has supported ints for some time, some now do.

Infact, such a terminfo description was imported where colour pairs for
screen-256color went up to 65536 which exposed a bug in the existing
implementation where it set to zero. Because the number might mean
something more than a range, we need to be able to store it accurately.

This requires a version bump because whilst the API hasn't changed thanks
to C int promotion, the ABI has. Also the underlying database structure
has changed as well - we now store the numeric paramter inside a uint32_t
field rather than a uint16_t one.
Whilst this change can still read the old style database, the old one
cannot read the new one and thus we now maintain the database as
terminfo2.cdb, leaving the old library and database alone so old programs
still work fine.

libcurses, libfrom, libmenu and libpanel have also been bumped to
accomoate this change.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

terminfo: satisfy gcc bitching

terminfo: v3 records should create v3 aliases

terminfo: Promote a terminfo description to v3 when required

Blindly scanning the capabilities for # and checking that the following
number is bigger than a short isn't reliable because this could be a
string value:

SomeString#1234

Instead, if we process the numeric as normal and if it's value is too big
for v1 then promote the record to v3.

terminfo: allow _ti_getname to convert from and to any version

PR/55118: Andreas Gustafsson: Oops, set the right flag variable.

terminfo: Add a comment for prior change.

terminfo: use , as a record version delimiter rather than @

@ is allowed in a terminfo description, but a comma is not.

support for older compilers

Introduce a bunch of inline functions and utilities to avoid code duplication.

As described in tech-userlevel:
- Modify the writing code to only write entries in the new
format for the terminal descriptions that require it.
- Store new format entries as <name>@v3
- Store old format entries with clamped values as <name> for
backwards compatibility
- Lookup first <name>@v3 and then <name> if that is not found.
- Don't create terminfo2 anymore; old programs keep working with
clamped entries, and new programs be able to use the wide
fields with using the original db file.

terminfo: promote numeric parameters from short to int

POSIX mandates implementations must support upto a short but may exceed it.
When NetBSD terminfo was implemented, no terminfo description used over
a short, but because ncurses has supported ints for some time, some now do.

Infact, such a terminfo description was imported where colour pairs for
screen-256color went up to 65536 which exposed a bug in the existing
implementation where it set to zero. Because the number might mean
something more than a range, we need to be able to store it accurately.

This requires a version bump because whilst the API hasn't changed thanks
to C int promotion, the ABI has. Also the underlying database structure
has changed as well - we now store the numeric paramter inside a uint32_t
field rather than a uint16_t one.
Whilst this change can still read the old style database, the old one
cannot read the new one and thus we now maintain the database as
terminfo2.cdb, leaving the old library and database alone so old programs
still work fine.

libcurses, libfrom, libmenu and libpanel have also been bumped to
accomoate this change.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

PR/55118: Andreas Gustafsson: Oops, set the right flag variable.

terminfo: Add a comment for prior change.

terminfo: use , as a record version delimiter rather than @

@ is allowed in a terminfo description, but a comma is not.

support for older compilers

Introduce a bunch of inline functions and utilities to avoid code duplication.

As described in tech-userlevel:
- Modify the writing code to only write entries in the new
format for the terminal descriptions that require it.
- Store new format entries as <name>@v3
- Store old format entries with clamped values as <name> for
backwards compatibility
- Lookup first <name>@v3 and then <name> if that is not found.
- Don't create terminfo2 anymore; old programs keep working with
clamped entries, and new programs be able to use the wide
fields with using the original db file.

terminfo: promote numeric parameters from short to int

POSIX mandates implementations must support upto a short but may exceed it.
When NetBSD terminfo was implemented, no terminfo description used over
a short, but because ncurses has supported ints for some time, some now do.

Infact, such a terminfo description was imported where colour pairs for
screen-256color went up to 65536 which exposed a bug in the existing
implementation where it set to zero. Because the number might mean
something more than a range, we need to be able to store it accurately.

This requires a version bump because whilst the API hasn't changed thanks
to C int promotion, the ABI has. Also the underlying database structure
has changed as well - we now store the numeric paramter inside a uint32_t
field rather than a uint16_t one.
Whilst this change can still read the old style database, the old one
cannot read the new one and thus we now maintain the database as
terminfo2.cdb, leaving the old library and database alone so old programs
still work fine.

libcurses, libfrom, libmenu and libpanel have also been bumped to
accomoate this change.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

support for older compilers

Introduce a bunch of inline functions and utilities to avoid code duplication.

As described in tech-userlevel:
- Modify the writing code to only write entries in the new
format for the terminal descriptions that require it.
- Store new format entries as <name>@v3
- Store old format entries with clamped values as <name> for
backwards compatibility
- Lookup first <name>@v3 and then <name> if that is not found.
- Don't create terminfo2 anymore; old programs keep working with
clamped entries, and new programs be able to use the wide
fields with using the original db file.

terminfo: promote numeric parameters from short to int

POSIX mandates implementations must support upto a short but may exceed it.
When NetBSD terminfo was implemented, no terminfo description used over
a short, but because ncurses has supported ints for some time, some now do.

Infact, such a terminfo description was imported where colour pairs for
screen-256color went up to 65536 which exposed a bug in the existing
implementation where it set to zero. Because the number might mean
something more than a range, we need to be able to store it accurately.

This requires a version bump because whilst the API hasn't changed thanks
to C int promotion, the ABI has. Also the underlying database structure
has changed as well - we now store the numeric paramter inside a uint32_t
field rather than a uint16_t one.
Whilst this change can still read the old style database, the old one
cannot read the new one and thus we now maintain the database as
terminfo2.cdb, leaving the old library and database alone so old programs
still work fine.

libcurses, libfrom, libmenu and libpanel have also been bumped to
accomoate this change.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

terminfo: promote numeric parameters from short to int

POSIX mandates implementations must support upto a short but may exceed it.
When NetBSD terminfo was implemented, no terminfo description used over
a short, but because ncurses has supported ints for some time, some now do.

Infact, such a terminfo description was imported where colour pairs for
screen-256color went up to 65536 which exposed a bug in the existing
implementation where it set to zero. Because the number might mean
something more than a range, we need to be able to store it accurately.

This requires a version bump because whilst the API hasn't changed thanks
to C int promotion, the ABI has. Also the underlying database structure
has changed as well - we now store the numeric paramter inside a uint32_t
field rather than a uint16_t one.
Whilst this change can still read the old style database, the old one
cannot read the new one and thus we now maintain the database as
terminfo2.cdb, leaving the old library and database alone so old programs
still work fine.

libcurses, libfrom, libmenu and libpanel have also been bumped to
accomoate this change.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

terminfo: truncate numeric parameters to a short

Because that is what our API demands.
We should probably change to int when we next bump the API.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.

Clean up some more warnings.

branches: 1.11.2;
Warn about unprintable characters in capability strings.

Following a newline, strip leading whitespace from capability strings.

branches: 1.9.10; 1.9.14;
Whitespace

branches: 1.8.2;
Switch terminfo(3) to cdb(5).

Fix a number of memory leaks. Keep final loop of the cleanup in tic(1)
under #ifdef __VALGRIND__ though.

branches: 1.6.2;
Kill a bunch of manual __attribute__ usages and replace them with the
equivalent sys/cdefs.h invocation.

branches: 1.5.4;
Clean up some compile warnings

Use _ti_get_token instead of strsep when parsing termcap entries.
This allows us to handle \E\ as a valid sequence.

compile.c needs sys/endian.h; PR 42875 from Henning Petersen.

If we only have a name then we flatten to an alias.

libterminfo can now compile a single terminfo description which allows
$TERMINFO to be a terminfo description as well as a file reference.

This enables the user to modify the terminfo description on read-only
media.