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Various other minor fixes to manpages

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Paul LeoNerd Evans 2012-01-21 23:26:47 +00:00
parent cfb0480c1a
commit 948e48d56a
6 changed files with 13 additions and 12 deletions
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11
man/termkey.7
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@ -13,7 +13,6 @@ To obtain the next key event synchronously, a program may call \fBtermkey_waitke
To work with an asynchronous program, two other functions are used. \fBtermkey_advisereadable\fP(3) informs a \fBtermkey\fP instance that more bytes of input may be available from its file handle, so it should call \fBread\fP(2) to obtain them. The program can then call \fBtermkey_getkey\fP(3) to extract key press events out of the internal buffer, in a way similar to \fBtermkey_waitkey\fP(). To work with an asynchronous program, two other functions are used. \fBtermkey_advisereadable\fP(3) informs a \fBtermkey\fP instance that more bytes of input may be available from its file handle, so it should call \fBread\fP(2) to obtain them. The program can then call \fBtermkey_getkey\fP(3) to extract key press events out of the internal buffer, in a way similar to \fBtermkey_waitkey\fP().
.PP .PP
Finally, bytes of input can be fed into the \fBtermkey\fP instance directly, by calling \fBtermkey_push_bytes\fP(3). This may be useful if the bytes have already been read from the terminal by the application, or even in situations that don't directly involve a terminal filehandle. Because of these situations, it is possible to construct a \fBtermkey\fP instance not associated with a file handle, by passing -1 as the file descriptor. Finally, bytes of input can be fed into the \fBtermkey\fP instance directly, by calling \fBtermkey_push_bytes\fP(3). This may be useful if the bytes have already been read from the terminal by the application, or even in situations that don't directly involve a terminal filehandle. Because of these situations, it is possible to construct a \fBtermkey\fP instance not associated with a file handle, by passing -1 as the file descriptor.
cmpkey.
.PP .PP
A \fBtermkey\fP instance contains a buffer of pending bytes that have been read but not yet consumed by \fBtermkey_getkey\fP(3). \fBtermkey_get_buffer_remaining\fP(3) returns the number of bytes of buffer space currently free in the instance. A \fBtermkey\fP instance contains a buffer of pending bytes that have been read but not yet consumed by \fBtermkey_getkey\fP(3). \fBtermkey_get_buffer_remaining\fP(3) returns the number of bytes of buffer space currently free in the instance.
.SS Key Events .SS Key Events
@ -44,16 +43,18 @@ a Unicode codepoint. This value indicates that \fIcode.codepoint\fP is valid, an
a numbered function key. This value indicates that \fIcode.number\fP is valid, and contains the number of the numbered function key. a numbered function key. This value indicates that \fIcode.number\fP is valid, and contains the number of the numbered function key.
.TP .TP
.B TERMKEY_TYPE_KEYSYM .B TERMKEY_TYPE_KEYSYM
a symbolic key. This value indicates that \fIcode.sym\fP is valid, and contains the symbolic key value. This is an opaque value which may be passed to \fBtermkey_get_keyname\fP(3). a symbolic key. This value indicates that \fIcode.sym\fP is valid, and contains the symbolic key value.
.TP .TP
.B TERMKEY_TYPE_MOUSE .B TERMKEY_TYPE_MOUSE
a mouse button press, release, or movement. The \fIcode.mouse\fP array should be considered opaque. Use \fBtermkey_interpret_mouse\fP(3) to interpret it. a mouse button press, release, or movement. The \fIcode.mouse\fP array should be considered opaque.
.PP .PP
The \fImodifiers\fP bitmask is composed of a bitwise-or of the constants \fBTERMKEY_KEYMOD_SHIFT\fP, \fBTERMKEY_KEYMOD_CTRL\fP and \fBTERMKEY_KEYMOD_ALT\fP. The \fImodifiers\fP bitmask is composed of a bitwise-or of the constants \fBTERMKEY_KEYMOD_SHIFT\fP, \fBTERMKEY_KEYMOD_CTRL\fP and \fBTERMKEY_KEYMOD_ALT\fP.
.PP .PP
The \fIutf8\fP field is only set on events whose \fItype\fP is \fBTERMKEY_TYPE_UNICODE\fP. It should not be read for other events. The \fIutf8\fP field is only set on events whose \fItype\fP is \fBTERMKEY_TYPE_UNICODE\fP. It should not be read for other events.
.PP .PP
Key events that represent special keys have with them as symbolic value that identifies the special key. \fBtermkey_get_keyname\fP(3) may be used to turn this symbolic value into a string, and \fBtermkey_lookup_keyname\fP(3) may be used to turn string names into symbolic values. A pair of functions are also provided to convert between key events and strings. \fBtermkey_strfkey\fP(3) converts a key event into a string, and \fBtermkey_strpkey\fP(3) parses a string turning it into a key event. Key events that represent special keys (\fItype\fP is \fBTERMKEY_TYPE_KEYSYM\fP) have with them as symbolic value that identifies the special key, in \fIcode.sym\fP. \fBtermkey_get_keyname\fP(3) may be used to turn this symbolic value into a string, and \fBtermkey_lookup_keyname\fP(3) may be used to turn string names into symbolic values.
.PP
A pair of functions are also provided to convert between key events and strings. \fBtermkey_strfkey\fP(3) converts a key event into a string, and \fBtermkey_strpkey\fP(3) parses a string turning it into a key event.
.PP .PP
Key events may be compared for equallity or ordering by using \fBtermkey_keycmp\fP(3). Key events may be compared for equallity or ordering by using \fBtermkey_keycmp\fP(3).
.SS Control Flags .SS Control Flags
@ -97,7 +98,7 @@ If this flag is set then a Unicode space character is represented using the \fBT
.B TERMKEY_CANON_DELBS .B TERMKEY_CANON_DELBS
If this flag is set then an ASCII DEL character is represented by the \fBTERMKEY_SYM_BACKSPACE\fP symbol. If not, it is represented by \fBTERMKEY_SYM_DEL\fP. An ASCII BS character is always represented by \fBTERMKEY_SYM_BACKSPACE\fP, regardless of this flag. If this flag is set then an ASCII DEL character is represented by the \fBTERMKEY_SYM_BACKSPACE\fP symbol. If not, it is represented by \fBTERMKEY_SYM_DEL\fP. An ASCII BS character is always represented by \fBTERMKEY_SYM_BACKSPACE\fP, regardless of this flag.
.SS Multi-byte Events .SS Multi-byte Events
Special keys, mouse events, and UTF-8 encoded Unicode text, are all represented by more than one byte. If the start of a multi-byte sequence is seen by \fBtermkey_waitkey\fP(), a \fBtermkey\fP instance will attempt to wait a short time to see if the remainder of the sequence arrives. If the sequence remains unfinished after this timeout, it will be returned in its incomplete state. Partial escape sequences are returned as an Escape key (\fBTERMKEY_SYM_ESCAPE\fP) followed by the text contained in the sequence. Partial UTF-8 sequences are returned as the Unicode replacement character, U+FFFD. Special keys, mouse events, and UTF-8 encoded Unicode text, are all represented by more than one byte. If the start of a multi-byte sequence is seen by \fBtermkey_waitkey\fP() it will wait a short time to see if the remainder of the sequence arrives. If the sequence remains unfinished after this timeout, it will be returned in its incomplete state. Partial escape sequences are returned as an Escape key (\fBTERMKEY_SYM_ESCAPE\fP) followed by the text contained in the sequence. Partial UTF-8 sequences are returned as the Unicode replacement character, U+FFFD.
.PP .PP
The amount of time that the \fBtermkey\fP instance will wait is set by \fBtermkey_set_waittime\fP(3), and is returned by \fBtermkey_get_waittime\fP(3). Initially it will be set to 50 miliseconds. The amount of time that the \fBtermkey\fP instance will wait is set by \fBtermkey_set_waittime\fP(3), and is returned by \fBtermkey_get_waittime\fP(3). Initially it will be set to 50 miliseconds.
.SH "SEE ALSO" .SH "SEE ALSO"

2
man/termkey_get_keyname.3
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@ -10,7 +10,7 @@ termkey_get_keyname \- return a string name for a symbolic key
.sp .sp
Link with \fI-ltermkey\fP. Link with \fI-ltermkey\fP.
.SH DESCRIPTION .SH DESCRIPTION
\fBtermkey_get_keyname\fP() returns a human-readable string name for the symbolic key value given by \fBsym\fP. The returned string is owned by the \fBtermkey\fP(7) instance \fItk\fP so should not be modified or freed. The returned pointer is guaranteed to be valid until the instance is released using \fBtermkey_destroy\fP(3). This function is the inverse of \fBtermkey_keyname2sym\fP(3). \fBtermkey_get_keyname\fP() returns a human-readable string name for the symbolic key value given by \fIsym\fP. The returned string is owned by the \fBtermkey\fP(7) instance \fItk\fP so should not be modified or freed. The returned pointer is guaranteed to be valid until the instance is released using \fBtermkey_destroy\fP(3). This function is the inverse of \fBtermkey_keyname2sym\fP(3).
.SH "RETURN VALUE" .SH "RETURN VALUE"
\fBtermkey_get_key\fP() returns a pointer to a string. \fBtermkey_get_key\fP() returns a pointer to a string.
.SH "SEE ALSO" .SH "SEE ALSO"

2
man/termkey_getkey.3.sh
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@ -36,7 +36,7 @@ Before returning, this function canonicalises the \fIkey\fP structure according
.SH "RETURN VALUE" .SH "RETURN VALUE"
\fBtermkey_getkey\fP() returns an enumeration of one of \fBTERMKEY_RES_KEY\fP, \fBTEMRKEY_RES_AGAIN\fP, \fBTERMKEY_RES_NONE\fP or \fBTERMKEY_RES_EOF\fP. \fBtermkey_getkey_force\fP() returns one of the above, except for \fBTERMKEY_RES_AGAIN\fP. \fBtermkey_getkey\fP() returns an enumeration of one of \fBTERMKEY_RES_KEY\fP, \fBTEMRKEY_RES_AGAIN\fP, \fBTERMKEY_RES_NONE\fP or \fBTERMKEY_RES_EOF\fP. \fBtermkey_getkey_force\fP() returns one of the above, except for \fBTERMKEY_RES_AGAIN\fP.
.SH EXAMPLE .SH EXAMPLE
The following example program prints details of every keypress until the user presses "Ctrl-C". It demonstrates how to use the \fBtermkey\fP instance in a typical \fBpoll\fP()-driven asynchronous program, which may include mixed IO with other file handles. The following example program prints details of every keypress until the user presses "Ctrl-C". It demonstrates how to use the \fBtermkey\fP instance in a typical \fBpoll\fP(2)-driven asynchronous program, which may include mixed IO with other file handles.
.PP .PP
.in +4n .in +4n
.nf .nf

2
man/termkey_keycmp.3
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@ -11,7 +11,7 @@ termkey_keycmp \- compare two key events
.sp .sp
Link with \fI-ltermkey\fP. Link with \fI-ltermkey\fP.
.SH DESCRIPTION .SH DESCRIPTION
\fBtermkey_keycmp\fP() compares two key structures and applies a total ordering, returning a value that is positive, zero, or negative, to indicate if the given structures are increasing, identical, or decreasing. Before comparison, copies of both referenced structures are taken, and canonicalised according to the rules for \fBtermkey_canonicalise\fP(3). \fBtermkey_keycmp\fP() compares two key structures and applies a total ordering, returning a value that is negative, zero, or positive, to indicate if the given structures are increasing, identical, or decreasing. Before comparison, copies of both referenced structures are taken, and canonicalised according to the rules for \fBtermkey_canonicalise\fP(3).
.PP .PP
Two structures of differing type are ordered \fBTERMKEY_TYPE_UNICODE\fP, \fBTERMKEY_TYPE_KEYSYM\fP, \fBTERMKEY_TYPE_FUNCTION\fP, \fBTERMKEY_TYPE_MOUSE\fP. Unicode structures are ordered by codepoint, keysym structures are ordered by keysym number, function structures are ordered by function key number, and mouse structures are ordered opaquely by an unspecified but consistent ordering. Within these values, keys different in modifier bits are ordered by the modifiers. Two structures of differing type are ordered \fBTERMKEY_TYPE_UNICODE\fP, \fBTERMKEY_TYPE_KEYSYM\fP, \fBTERMKEY_TYPE_FUNCTION\fP, \fBTERMKEY_TYPE_MOUSE\fP. Unicode structures are ordered by codepoint, keysym structures are ordered by keysym number, function structures are ordered by function key number, and mouse structures are ordered opaquely by an unspecified but consistent ordering. Within these values, keys different in modifier bits are ordered by the modifiers.
.SH "RETURN VALUE" .SH "RETURN VALUE"

6
man/termkey_new.3
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@ -16,11 +16,11 @@ Link with \fI\-ltermkey\fP.
.PP .PP
\fBtermkey_destroy\fP() destroys the given instance and releases any resources controlled by it. It will not close the underlying filehandle given as the \fIfd\fP argument to \fBtermkey_new\fP(). \fBtermkey_destroy\fP() destroys the given instance and releases any resources controlled by it. It will not close the underlying filehandle given as the \fIfd\fP argument to \fBtermkey_new\fP().
.PP .PP
When the constructor is invoked, it attempts to detect if the current locale is UTF-8 aware or not, and sets either the \fBTERMKEY_FLAG_UTF8\fP or \fBTERMKEY_FLAG_RAW\fP flag. One of these two bits will always be in effect. The current flags in effect can be obtained by \fBtermkey_get_flags\fP(3). The constructor attempts to detect if the current locale is UTF-8 aware or not, and sets either the \fBTERMKEY_FLAG_UTF8\fP or \fBTERMKEY_FLAG_RAW\fP flag. One of these two bits will always be in effect. The current flags in effect can be obtained by \fBtermkey_get_flags\fP(3).
.PP .PP
If a file handle is provided, the terminfo driver may send a string to the terminal before \fBtermkey_new\fP() returns to initialise it, or set the state correctly. This will not be done if no file handle is provided, or if the file handle is a pipe (\fBS_ISFIFO\fP()). In this case it will be the caller's responsibility to ensure the terminal is in the correct mode. If a file handle is provided, the terminfo driver may send a string to initialise or set the state of the terminal before \fBtermkey_new\fP() returns. This will not be done if no file handle is provided, or if the file handle is a pipe (\fBS_ISFIFO\fP()). In this case it will be the caller's responsibility to ensure the terminal is in the correct mode.
.SH VERSION CHECK MACRO .SH VERSION CHECK MACRO
Before calling any functions in the \fItermkey\fP library, an application should use the \fBTERMKEY_CHECK_VERSION\fP macro to check that the loaded version of the library is compatible with the version it was compiled against. This should be done early on, ideally just after entering its \fBmain()\fP function. Before calling any functions in the \fBtermkey\fP library, an application should use the \fBTERMKEY_CHECK_VERSION\fP macro to check that the loaded version of the library is compatible with the version it was compiled against. This should be done early on, ideally just after entering its \fBmain\fP() function.
.SH "RETURN VALUE" .SH "RETURN VALUE"
If successful, \fBtermkey_new\fP() returns a pointer to the new instance. On failure, \fBNULL\fP is returned. \fBtermkey_destroy\fP() returns no value. If successful, \fBtermkey_new\fP() returns a pointer to the new instance. On failure, \fBNULL\fP is returned. \fBtermkey_destroy\fP() returns no value.
.SH "SEE ALSO" .SH "SEE ALSO"

2
man/termkey_waitkey.3.sh
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@ -12,7 +12,7 @@ termkey_waitkey \- wait for and retrieve the next key event
.sp .sp
Link with \fI-ltermkey\fP. Link with \fI-ltermkey\fP.
.SH DESCRIPTION .SH DESCRIPTION
\fBtermkey_waitkey\fP(3) attempts to retrieve a single keypress event from the \fBtermkey\fP(7) instance buffer, and put it in the structure referred to by \fIkey\fP. If successful it will return \fBTERMKEY_RES_KEY\fP to indicate that the structure now contains a new keypress event. If nothing is in the buffer it will block until one is available. If no events are ready and the input stream is now closed, will return \fBTERMKEY_RES_EOF\fP. If no filehandle is associated with this instance, \fBTERMKEY_RES_ERROR\fP is returned with \fIerrno\fP set to \fBEBADF\fP. \fBtermkey_waitkey\fP() attempts to retrieve a single keypress event from the \fBtermkey\fP(7) instance buffer, and put it in the structure referred to by \fIkey\fP. If successful it will return \fBTERMKEY_RES_KEY\fP to indicate that the structure now contains a new keypress event. If nothing is in the buffer it will block until one is available. If no events are ready and the input stream is now closed, will return \fBTERMKEY_RES_EOF\fP. If no filehandle is associated with this instance, \fBTERMKEY_RES_ERROR\fP is returned with \fIerrno\fP set to \fBEBADF\fP.
.PP .PP
Before returning, this function canonicalises the \fIkey\fP structure according to the rules given for \fBtermkey_canonicalise\fP(3). Before returning, this function canonicalises the \fIkey\fP structure according to the rules given for \fBtermkey_canonicalise\fP(3).
.PP .PP