summaryrefslogtreecommitdiff
path: root/src/config/config_file.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/config/config_file.c')
-rw-r--r--src/config/config_file.c716
1 files changed, 0 insertions, 716 deletions
diff --git a/src/config/config_file.c b/src/config/config_file.c
deleted file mode 100644
index 2e5ef0c..0000000
--- a/src/config/config_file.c
+++ /dev/null
@@ -1,716 +0,0 @@
-/**** POSIX *******************************************************************/
-#include <errno.h>
-#include <string.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <limits.h>
-
-#include <sys/time.h>
-
-/**** RELABSD *****************************************************************/
-#include <relabsd/debug.h>
-
-#include <relabsd/config/config_file.h>
-
-#ifndef RELABSD_OPTION_MAX_SIZE
- #define RELABSD_OPTION_MAX_SIZE 64
-#endif
-
-/******************************************************************************/
-/**** LOCAL FUNCTIONS *********************************************************/
-/******************************************************************************/
-/*
- * Returns -1 on (fatal) error,
- * 0 on EOF,
- * 1 on newline.
- */
-static int reach_next_line_or_eof (FILE f [const restrict static 1])
-{
- char c;
-
- c = (char) getc(f);
-
- while ((c != '\n') && c != EOF)
- {
- c = (char) getc(f);
- }
-
- if (ferror(f))
- {
- /*
- * The 'ferror' function's manual specifically states that it does not
- * sets errno. There is no mention of errno in the 'getc' function's
- * either, so I am assuming that errno cannot be used to indicate the
- * error.
- */
- RELABSD_S_FATAL
- (
- "[CONFIG] Error while attempting to reach EOF or next line: %s."
- );
-
- return -1;
- }
-
- if (c == EOF)
- {
- return 0;
- }
-
- return 1;
-}
-
-/*
- * Returns -1 if the option was discarded (an error has been reported),
- * 0 if the option was successfully parsed.
- *
- * ('length' - 1) is the number of relevant characters in 'name'.
- * 'name' must support 'length' characters.
- * name[length] will be set to \0, so it does not need to be when calling
- * this function.
- */
-static int parse_option
-(
- struct relabsd_config * const conf,
- enum relabsd_axis const axis,
- char * const name,
- int const length
-)
-{
- name[length] = '\0';
-
- if (strcmp(name, "direct") == 0)
- {
- conf->axis[axis].option[RELABSD_DIRECT_OPTION] = 1;
-
- RELABSD_DEBUG
- (
- RELABSD_DEBUG_CONFIG,
- "Axis '%s' enabled option 'direct'.",
- relabsd_axis_to_name(axis)
- );
-
- if (conf->axis[axis].option[RELABSD_FRAMED_OPTION])
- {
- RELABSD_WARNING
- (
- "[CONFIG] Axis '%s': using option 'direct' discards option"
- "'framed'.",
- relabsd_axis_to_name(axis)
- );
- }
- }
- else if (strcmp(name, "real_fuzz") == 0)
- {
- conf->axis[axis].option[RELABSD_REAL_FUZZ_OPTION] = 1;
-
- RELABSD_DEBUG
- (
- RELABSD_DEBUG_CONFIG,
- "Axis '%s' enabled option 'real_fuzz'.",
- relabsd_axis_to_name(axis)
- );
- }
- else if (strcmp(name, "framed") == 0)
- {
- conf->axis[axis].option[RELABSD_FRAMED_OPTION] = 1;
-
- RELABSD_DEBUG
- (
- RELABSD_DEBUG_CONFIG,
- "Axis '%s' enabled option 'framed'.",
- relabsd_axis_to_name(axis)
- );
-
- if (conf->axis[axis].option[RELABSD_DIRECT_OPTION])
- {
- RELABSD_WARNING
- (
- "[CONFIG] Axis '%s': using option 'direct' discards option"
- "'framed'.",
- relabsd_axis_to_name(axis)
- );
- }
- }
- else
- {
- RELABSD_ERROR
- (
- "[CONFIG] Unknown option '%s' for axis '%s'.",
- name,
- relabsd_axis_to_name(axis)
- );
-
- return -1;
- }
-
- return 0;
-}
-
-/*
- * Returns -1 on error,
- * 0 on EOF,
- * 1 on newline.
- */
-static int read_axis_options
-(
- struct relabsd_config * const conf,
- FILE * const f,
- enum relabsd_axis const axis
-)
-{
- char option[(RELABSD_OPTION_MAX_SIZE + 1)];
- int i, prev_errno;
- char c;
-
- option[RELABSD_OPTION_MAX_SIZE] = '\0';
-
- prev_errno = errno;
-
- errno = 0;
-
- memset(conf->axis[axis].option, 0, RELABSD_OPTIONS_COUNT * sizeof(int));
-
- i = 0;
-
- while (i <= RELABSD_OPTION_MAX_SIZE)
- {
- c = (char) getc(f);
-
- if ((errno != 0) && (c == EOF))
- {
- RELABSD_FATAL
- (
- "[CONFIG] Reading error while parsing option name (axis '%s'): %s.",
- relabsd_axis_to_name(axis),
- strerror(errno)
- );
-
- errno = prev_errno;
-
- return -1;
- }
-
- switch (c)
- {
- case ' ':
- case '\t':
- break;
-
- case ',':
- /* We parsed a new option and there is a least another. */
- parse_option(conf, axis, option, i);
-
- i = 0;
-
- break;
-
- case '\n':
- parse_option(conf, axis, option, i);
- errno = prev_errno;
-
- return 1;
-
- case EOF:
- parse_option(conf, axis, option, i);
- errno = prev_errno;
-
- return 0;
-
- default:
- option[i] = c;
- i++;
-
- break;
- }
- }
-
- RELABSD_FATAL
- (
- "[CONFIG] Option name '%s[...]' (axis '%s') is too long (%d chars max).",
- option,
- relabsd_axis_to_name(axis),
- RELABSD_OPTION_MAX_SIZE
- );
-
- return -1;
-}
-
-static int parse_timeout_option
-(
- struct relabsd_config * const conf,
- const char * const param
-)
-{
- int timeout_msec;
- const int prev_errno = errno;
-
- conf->enable_timeout = 1;
-
- errno = 0;
-
- timeout_msec = atoi(param);
-
- if (timeout_msec <= 0)
- {
- RELABSD_FATAL
- (
- "Illegal value for timeout \"%d\": accepted range is [1, %d].",
- timeout_msec,
- INT_MAX
- );
-
- return -1;
- }
-
- memset((void *) &(conf->timeout), 0, sizeof(struct timeval));
-
- conf->timeout.tv_sec = (time_t) (timeout_msec / 1000);
-
- conf->timeout.tv_usec =
- (
- ((suseconds_t) timeout_msec)
- * ((suseconds_t) 1000)
- );
-
- return 0;
-}
-
-/*
- * Returns -1 on (fatal) error,
- * 0 on succes.
- */
-static int parse_axis_configuration_line
-(
- struct relabsd_config * const conf,
- FILE * const f,
- const char * const buffer
-)
-{
- int valc, prev_errno;
- enum relabsd_axis axis;
-
- axis = relabsd_axis_from_name(buffer);
-
- if (axis == RELABSD_UNKNOWN)
- {
- RELABSD_FATAL
- (
- "[CONFIG] Unknown axis '%s'.",
- buffer
- );
-
- return -1;
- }
-
- prev_errno = errno;
- errno = 0;
-
- valc =
- fscanf
- (
- f,
- "%d %d %d %d %d",
- &(conf->axis[axis].min),
- &(conf->axis[axis].max),
- &(conf->axis[axis].fuzz),
- &(conf->axis[axis].flat),
- &(conf->axis[axis].resolution)
- );
-
- if (valc == EOF)
- {
- if (errno == 0)
- {
- RELABSD_FATAL
- (
- "[CONFIG] Unexpected end of file while reading axis '%s'.",
- buffer
- );
- }
- else
- {
- RELABSD_FATAL
- (
- "[CONFIG] An error occured while reading axis '%s': %s.",
- buffer,
- strerror(errno)
- );
- }
-
- errno = prev_errno;
-
- return -1;
- }
- else if (valc < 5)
- {
- RELABSD_FATAL
- (
- "[CONFIG] Invalid parameter count for axis '%s'.",
- buffer
- );
-
- errno = prev_errno;
-
- return -1;
- }
-
- RELABSD_DEBUG
- (
- RELABSD_DEBUG_CONFIG,
- "Axis '%s': {min = %d; max = %d; fuzz = %d; flat = %d; resolution = %d}",
- buffer,
- conf->axis[axis].min,
- conf->axis[axis].max,
- conf->axis[axis].fuzz,
- conf->axis[axis].flat,
- conf->axis[axis].resolution
- );
-
- errno = prev_errno;
-
- conf->axis[axis].enabled = 1;
- conf->axis[axis].previous_value = 0;
-
- return read_axis_options(conf, f, axis);
-}
-
-/*
- * Returns -1 on (fatal) error,
- * 0 on EOF,
- * 1 on newline.
- */
-static int read_config_line
-(
- struct relabsd_config * const conf,
- FILE * const f,
- const char * const prefix
-)
-{
- if (!RELABSD_IS_PREFIX("#", prefix))
- {
- return parse_axis_configuration_line(conf, f, prefix);
- }
-
- return reach_next_line_or_eof(f);
-}
-
-/*
- * Returns -1 on (fatal) error,
- * 0 on success.
- */
-static int read_config_file
-(
- struct relabsd_config * const conf,
- char * const filename
-)
-{
- FILE * f;
- char buffer[(RELABSD_CONF_AXIS_CODE_SIZE + 1)];
- int continue_reading, prev_errno;
-
- buffer[RELABSD_CONF_AXIS_CODE_SIZE] = '\0';
-
- f = fopen(filename, "r");
-
- if (f == (FILE *) NULL)
- {
- RELABSD_FATAL
- (
- "[CONFIG] Could not open file: %s.",
- strerror(errno)
- );
-
- return -1;
- }
-
-
- prev_errno = errno;
- errno = 0;
-
- continue_reading = 1;
-
- while
- (
- (continue_reading == 1)
- &&
- (
- fscanf
- (
- f,
- "%" RELABSD_TO_STRING(RELABSD_CONF_AXIS_CODE_SIZE) "s",
- buffer
- )
- != EOF
- )
- )
- {
- switch (read_config_line(conf, f, buffer))
- {
- case 1:
- /* Everything is going well. */
- break;
-
- case 0:
- /* EOF reached. */
- continue_reading = 0;
- break;
-
- case -1:
- /* A fatal error occured. */
- errno = prev_errno;
-
- fclose(f);
- return -1;
- }
- }
-
- if (errno != 0)
- {
- /* An error happened in the while loop condition. */
- RELABSD_FATAL
- (
- "[CONFIG] Error while reading file: %s, last read '%s'.",
- strerror(errno),
- buffer
- );
-
- errno = prev_errno;
-
- fclose(f);
-
- return -1;
- }
-
- errno = prev_errno;
-
- fclose(f);
-
- return 0;
-}
-
-static void print_usage
-(
- const char * const exec
-)
-{
- RELABSD_FATAL
- (
- "USAGE: %s input_device config_file [<OPTION>+]\n"
- "<OPTION>:\n"
- "\t [-n | --name] <relabsd_device_name>: Names the virtual device.\n"
- "\t [-t | --timeout] <timeout_in_ms>: Resets all enabled axes to zero"
- " <timeout_in_ms> milliseconds after the last event. Range for"
- " <timeout_in_ms>: [1, %d].\n"
- "Alternatively, the previous usage is still supported:\n"
- "\t%s input_device config_file [<relabsd_device_name>]\n"
- "However, with that usage, <relabsd_device_name> cannot start with '-'.",
- exec,
- INT_MAX,
- exec
- );
-}
-/*
- * Returns -1 on (fatal) error,
- * 0 on valid usage.
- */
-static int check_usage
-(
- int const argc,
- char * const * const argv
-)
-{
- if (argc < 3)
- {
- print_usage(argv[0]);
-
- return -1;
- }
-
- return 0;
-}
-
-static void init_axes_config (struct relabsd_config * const conf)
-{
- int i;
-
- for (i = RELABSD_VALID_AXES_COUNT; i --> 0;)
- {
- conf->axis[i].enabled = 0;
- }
-}
-
-static int parse_options
-(
- struct relabsd_config * const conf,
- int const argc,
- char * const * const argv
-)
-{
- int i;
-
- if ((argc == 4) && !RELABSD_IS_PREFIX("-", argv[3]))
- {
- /* Old usage */
-
- RELABSD_S_DEBUG(RELABSD_DEBUG_CONFIG, "Old usage detected.");
-
- conf->device_name = argv[3];
-
- RELABSD_DEBUG
- (
- RELABSD_DEBUG_CONFIG,
- "Virtual device name param set to '%s'.",
- conf->device_name
- );
-
- return 0;
- }
-
- conf->device_name = NULL;
- conf->enable_timeout = 0;
-
- for (i = 3; i < argc; ++i)
- {
- if
- (
- RELABSD_STRING_EQUALS("-n", argv[i])
- || RELABSD_STRING_EQUALS("--name", argv[i])
- )
- {
- i += 1;
-
- if (i >= argc)
- {
- RELABSD_S_FATAL
- (
- "Missing value for parameter \"--name\"."
- );
-
- print_usage(argv[0]);
-
- return -1;
- }
-
- conf->device_name = argv[i];
- }
- else if
- (
- RELABSD_STRING_EQUALS("-t", argv[i])
- || RELABSD_STRING_EQUALS("--timeout", argv[i])
- )
- {
- i += 1;
-
- if (i >= argc)
- {
- RELABSD_S_FATAL
- (
- "Missing value for parameter \"--timeout\"."
- );
-
- print_usage(argv[0]);
-
- return -1;
- }
-
- if (parse_timeout_option(conf, argv[i]) < 0)
- {
- return -1;
- }
- }
- else
- {
- RELABSD_FATAL
- (
- "Unknown parameter \"%s\".",
- argv[i]
- );
-
- print_usage(argv[0]);
-
- return -1;
- }
- }
-
- return 0;
-}
-
-int relabsd_config_parse
-(
- struct relabsd_config * const conf,
- int const argc,
- char * const * const argv
-)
-{
- RELABSD_S_DEBUG(RELABSD_DEBUG_PROGRAM_FLOW, "Parsing config & params...");
-
- if (check_usage(argc, argv) < 0)
- {
- return -1;
- }
-
- if (parse_options(conf, argc, argv) < 0)
- {
- return -1;
- }
-
- conf->input_file = argv[1];
-
- RELABSD_DEBUG
- (
- RELABSD_DEBUG_CONFIG,
- "Using configuration file '%s'.",
- conf->input_file
- );
-
- init_axes_config(conf);
-
- if (read_config_file(conf, argv[2]) < 0)
- {
- return -1;
- }
-
- return 0;
-}
-
-int relabsd_config_filter
-(
- struct relabsd_config * const conf,
- enum relabsd_axis const axis,
- int * const value
-)
-{
- if ((axis == RELABSD_UNKNOWN) || !conf->axis[axis].enabled)
- {
- return 0;
- }
-
- /* TODO: handle conf->axis[axis].resolution */
-
- if (conf->axis[axis].option[RELABSD_DIRECT_OPTION])
- {
- return direct_filter((conf->axis + axis), value);
- }
- else
- {
- return rel_to_abs_filter((conf->axis + axis), value);
- }
-}
-
-/******************************************************************************/
-/**** EXPORTED FUNCTIONS ******************************************************/
-/******************************************************************************/
-void relabsd_config_get_absinfo
-(
- const struct relabsd_config * const conf,
- enum relabsd_axis const axis,
- struct input_absinfo * const absinfo
-)
-{
- absinfo->value = (__s32) 0;
- absinfo->minimum = (__s32) conf->axis[axis].min;
- absinfo->maximum = (__s32) conf->axis[axis].max;
- absinfo->fuzz = (__s32) conf->axis[axis].fuzz;
- absinfo->flat = (__s32) conf->axis[axis].flat;
- absinfo->resolution = (__s32) conf->axis[axis].resolution;
-}