X-Git-Url: https://git.street.me.uk/andy/viking.git/blobdiff_plain/5a9cffb11d58c725f425828c09c814d1139bbae1..0fa0c0b718943c7e50719fe516de88c3fd3ab6a8:/src/babel.c?ds=inline diff --git a/src/babel.c b/src/babel.c index 526eaa04..e362ef2c 100644 --- a/src/babel.c +++ b/src/babel.c @@ -20,9 +20,12 @@ * */ -/* babel.c: running external programs and redirecting to TRWLayers. +/** + * SECTION:babel + * @short_description: running external programs and redirecting to TRWLayers. + * * GPSBabel may not be necessary for everything -- for instance, - * use a_babel_convert_from_shellcommand with input_file_type == NULL + * use a_babel_convert_from_shellcommand() with input_file_type == %NULL * for an external program that outputs GPX. */ @@ -40,17 +43,51 @@ #ifdef HAVE_UNISTD_H #include #endif +#include #include #include -/* in the future we could have support for other shells (change command strings), or not use a shell at all */ +/* TODO in the future we could have support for other shells (change command strings), or not use a shell at all */ #define BASH_LOCATION "/bin/bash" +/** + * Path to gpsbabel + */ +static gchar *gpsbabel_loc = NULL; + +/** + * Path to unbuffer + */ +static gchar *unbuffer_loc = NULL; + +/** + * List of file formats supported by gpsbabel. + */ +GList *a_babel_file_list; + +/** + * List of device supported by gpsbabel. + */ +GList *a_babel_device_list; + +/** + * a_babel_convert: + * @vt: The TRW layer to modify. All data will be deleted, and replaced by what gpsbabel outputs. + * @babelargs: A string containing gpsbabel command line filter options. No file types or names should + * be specified. + * @cb: A callback function. + * + * This function modifies data in a trw layer using gpsbabel filters. This routine is synchronous; + * that is, it will block the calling program until the conversion is done. To avoid blocking, call + * this routine from a worker thread. + * + * Returns: %TRUE on success + */ gboolean a_babel_convert( VikTrwLayer *vt, const char *babelargs, BabelStatusFunc cb, gpointer user_data ) { int fd_src; FILE *f; - gchar *name_src; + gchar *name_src = NULL; gboolean ret = FALSE; gchar *bargs = g_strconcat(babelargs, " -i gpx", NULL); @@ -59,109 +96,48 @@ gboolean a_babel_convert( VikTrwLayer *vt, const char *babelargs, BabelStatusFun a_gpx_write_file(vt, f); fclose(f); f = NULL; - ret = a_babel_convert_from ( vt, bargs, cb, name_src, user_data ); + ret = a_babel_convert_from ( vt, bargs, name_src, cb, user_data ); + g_remove(name_src); + g_free(name_src); } g_free(bargs); - g_remove(name_src); - g_free(name_src); return ret; } -/* Runs args[0] with the arguments and uses the GPX module - * to import the GPX data into layer vt. Assumes that upon - * running the command, the data will appear in the (usually - * temporary) file name_dst. - * - * cb: callback that is run upon new data from STDOUT (?) - * (TODO: STDERR would be nice since we usually redirect STDOUT) - * user_data: passed along to cb - * - * returns TRUE on success +/** + * Perform any cleanup actions once GPSBabel has completed running */ -#ifdef WINDOWS -gboolean babel_general_convert_from( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_dst, gpointer user_data ) +static void babel_watch ( GPid pid, + gint status, + gpointer user_data ) { - gboolean ret; - FILE *f; - gchar *cmd; - gchar **args2; - - STARTUPINFO si; - PROCESS_INFORMATION pi; - - - ZeroMemory( &si, sizeof(si) ); - ZeroMemory( &pi, sizeof(pi) ); - si.cb = sizeof(si); - si.dwFlags = STARTF_USESHOWWINDOW; - si.wShowWindow = SW_HIDE; - - cmd = g_strjoinv( " ", args); - args2 = g_strsplit(cmd, "\\", 0); - g_free(cmd); - cmd = g_strjoinv( "\\\\", args2); - g_free(args2); - args2 = g_strsplit(cmd, "/", 0); - g_free(cmd); - cmd = g_strjoinv( "\\\\", args2); - - if( !CreateProcess( - NULL, // No module name (use command line). - (LPTSTR)cmd, // Command line. - NULL, // Process handle not inheritable. - NULL, // Thread handle not inheritable. - FALSE, // Set handle inheritance to FALSE. - 0, // No creation flags. - NULL, // Use parent's environment block. - NULL, // Use parent's starting directory. - &si, // Pointer to STARTUPINFO structure. - &pi ) // Pointer to PROCESS_INFORMATION structure. - ){ - g_warning( "CreateProcess failed"); - ret = FALSE; - } - else { - WaitForSingleObject(pi.hProcess, INFINITE); - WaitForSingleObject(pi.hThread, INFINITE); - - CloseHandle(pi.hThread); - CloseHandle(pi.hProcess); - - if ( cb ) - cb(BABEL_DONE, NULL, user_data); - - f = g_fopen(name_dst, "r"); - a_gpx_read_file( vt, f ); - fclose(f); - ret = TRUE; - } - - g_strfreev( args2 ); - g_free( cmd ); - - return ret; + g_spawn_close_pid ( pid ); } -/* Windows */ -#else -/* Posix */ -gboolean babel_general_convert_from( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_dst, gpointer user_data ) + +/** + * babel_general_convert: + * @args: The command line arguments passed to GPSBabel + * @cb: callback that is run for each line of GPSBabel output and at completion of the run + * callback may be NULL + * @user_data: passed along to cb + * + * The function to actually invoke the GPSBabel external command + * + * Returns: %TRUE on successful invocation of GPSBabel command + */ +static gboolean babel_general_convert( BabelStatusFunc cb, gchar **args, gpointer user_data ) { gboolean ret = FALSE; GPid pid; GError *error = NULL; gint babel_stdout; - FILE *f; - - if (!g_spawn_async_with_pipes (NULL, args, NULL, 0, NULL, NULL, &pid, NULL, &babel_stdout, NULL, &error)) { - g_warning("Error : %s", error->message); + if (!g_spawn_async_with_pipes (NULL, args, NULL, G_SPAWN_DO_NOT_REAP_CHILD, NULL, NULL, &pid, NULL, &babel_stdout, NULL, &error)) { + g_error("Async command failed: %s", error->message); g_error_free(error); ret = FALSE; } else { - /* No data required */ - if ( vt == NULL ) - return TRUE; gchar line[512]; FILE *diag; @@ -176,38 +152,80 @@ gboolean babel_general_convert_from( VikTrwLayer *vt, BabelStatusFunc cb, gchar cb(BABEL_DONE, NULL, user_data); fclose(diag); diag = NULL; - waitpid(pid, NULL, 0); - g_spawn_close_pid(pid); + + g_child_watch_add ( pid, (GChildWatchFunc) babel_watch, NULL ); + + ret = TRUE; + } + + return ret; +} + +/** + * babel_general_convert_from: + * @vtl: The TrackWaypoint Layer to save the data into + * If it is null it signifies that no data is to be processed, + * however the gpsbabel command is still ran as it can be for non-data related options eg: + * for use with the power off command - 'command_off' + * @cb: callback that is run upon new data from STDOUT (?) + * (TODO: STDERR would be nice since we usually redirect STDOUT) + * @user_data: passed along to cb + * + * Runs args[0] with the arguments and uses the GPX module + * to import the GPX data into layer vt. Assumes that upon + * running the command, the data will appear in the (usually + * temporary) file name_dst. + * + * Returns: %TRUE on success + */ +static gboolean babel_general_convert_from( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_dst, gpointer user_data ) +{ + gboolean ret = FALSE; + FILE *f = NULL; + + if (babel_general_convert(cb, args, user_data)) { + + /* No data actually required but still need to have run gpsbabel anyway + - eg using the device power command_off */ + if ( vt == NULL ) + return TRUE; f = g_fopen(name_dst, "r"); if (f) { - a_gpx_read_file ( vt, f ); + ret = a_gpx_read_file ( vt, f ); fclose(f); f = NULL; - ret = TRUE; } } return ret; } -#endif /* Posix */ -gboolean a_babel_convert_from( VikTrwLayer *vt, const char *babelargs, BabelStatusFunc cb, const char *from, gpointer user_data ) +/** + * a_babel_convert_from: + * @vt: The TRW layer to place data into. Duplicate items will be overwritten. + * @babelargs: A string containing gpsbabel command line options. In addition to any filters, this string + * must include the input file type (-i) option. + * @cb: Optional callback function. Same usage as in a_babel_convert(). + * + * Loads data into a trw layer from a file, using gpsbabel. This routine is synchronous; + * that is, it will block the calling program until the conversion is done. To avoid blocking, call + * this routine from a worker thread. + * + * Returns: %TRUE on success + */ +gboolean a_babel_convert_from( VikTrwLayer *vt, const char *babelargs, const char *from, BabelStatusFunc cb, gpointer user_data ) { int i,j; int fd_dst; - gchar *name_dst; + gchar *name_dst = NULL; gboolean ret = FALSE; gchar *args[64]; if ((fd_dst = g_file_open_tmp("tmp-viking.XXXXXX", &name_dst, NULL)) >= 0) { - gchar *gpsbabel_loc; close(fd_dst); - gpsbabel_loc = g_find_program_in_path("gpsbabel"); - if (gpsbabel_loc ) { - gchar *unbuffer_loc = g_find_program_in_path("unbuffer"); gchar **sub_args = g_strsplit(babelargs, " ", 0); i = 0; @@ -229,35 +247,37 @@ gboolean a_babel_convert_from( VikTrwLayer *vt, const char *babelargs, BabelStat ret = babel_general_convert_from ( vt, cb, args, name_dst, user_data ); - g_free ( unbuffer_loc ); g_strfreev(sub_args); } else - g_warning("gpsbabel not found in PATH"); - g_free(gpsbabel_loc); + g_critical("gpsbabel not found in PATH"); + g_remove(name_dst); + g_free(name_dst); } - g_remove(name_dst); - g_free(name_dst); return ret; } -/* Runs the input command in a shell (bash) and optionally uses GPSBabel to convert from input_file_type. - * If input_file_type is NULL, doesn't use GPSBabel. Input must be GPX (or Geocaching *.loc) +/** + * a_babel_convert_from_shellcommand: + * + * Runs the input command in a shell (bash) and optionally uses GPSBabel to convert from input_file_type. + * If input_file_type is %NULL, doesn't use GPSBabel. Input must be GPX (or Geocaching *.loc) * - * Uses babel_general_convert_from to actually run the command. This function + * Uses babel_general_convert_from() to actually run the command. This function * prepares the command and temporary file, and sets up the arguments for bash. */ gboolean a_babel_convert_from_shellcommand ( VikTrwLayer *vt, const char *input_cmd, const char *input_file_type, BabelStatusFunc cb, gpointer user_data ) { int fd_dst; - gchar *name_dst; + gchar *name_dst = NULL; gboolean ret = FALSE; gchar **args; if ((fd_dst = g_file_open_tmp("tmp-viking.XXXXXX", &name_dst, NULL)) >= 0) { gchar *shell_command; if ( input_file_type ) - shell_command = g_strdup_printf("%s | gpsbabel -i %s -f - -o gpx -F %s", input_cmd, input_file_type, name_dst); + shell_command = g_strdup_printf("%s | %s -i %s -f - -o gpx -F %s", + input_cmd, gpsbabel_loc, input_file_type, name_dst); else shell_command = g_strdup_printf("%s > %s", input_cmd, name_dst); @@ -273,10 +293,10 @@ gboolean a_babel_convert_from_shellcommand ( VikTrwLayer *vt, const char *input_ ret = babel_general_convert_from ( vt, cb, args, name_dst, user_data ); g_free ( args ); g_free ( shell_command ); + g_remove(name_dst); + g_free(name_dst); } - g_remove(name_dst); - g_free(name_dst); return ret; } @@ -286,8 +306,8 @@ gboolean a_babel_convert_from_url ( VikTrwLayer *vt, const char *url, const char gint fd_src; int fetch_ret; gboolean ret = FALSE; - gchar *name_src; - gchar *babelargs; + gchar *name_src = NULL; + gchar *babelargs = NULL; g_debug("%s: input_type=%s url=%s", __FUNCTION__, input_type, url); @@ -299,7 +319,7 @@ gboolean a_babel_convert_from_url ( VikTrwLayer *vt, const char *url, const char fetch_ret = a_http_download_get_url(url, "", name_src, &options, NULL); if (fetch_ret == 0) - ret = a_babel_convert_from( vt, babelargs, NULL, name_src, NULL); + ret = a_babel_convert_from( vt, babelargs, name_src, NULL, NULL); g_remove(name_src); g_free(babelargs); @@ -309,129 +329,28 @@ gboolean a_babel_convert_from_url ( VikTrwLayer *vt, const char *url, const char return ret; } -#ifdef WINDOWS -gboolean babel_general_convert_to( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_src, gpointer user_data ) +static gboolean babel_general_convert_to( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_src, gpointer user_data ) { - gboolean ret; - gchar *cmd; - gchar **args2; - if (!a_file_export(vt, name_src, FILE_TYPE_GPX, NULL)) { - g_warning("%s(): error exporting to %s", __FUNCTION__, name_src); - return(FALSE); + g_critical("Error exporting to %s", name_src); + return FALSE; } - STARTUPINFO si; - PROCESS_INFORMATION pi; - - ZeroMemory( &si, sizeof(si) ); - ZeroMemory( &pi, sizeof(pi) ); - si.cb = sizeof(si); - si.dwFlags = STARTF_USESHOWWINDOW; - si.wShowWindow = SW_HIDE; - - - cmd = g_strjoinv( " ", args); - args2 = g_strsplit(cmd, "\\", 0); - cmd = g_strjoinv( "\\\\", args2); - g_free(args2); - args2 = g_strsplit(cmd, "/", 0); - g_free(cmd); - cmd = g_strjoinv( "\\\\", args2); - - if( !CreateProcess( - NULL, // No module name (use command line). - (LPTSTR)cmd, // Command line. - NULL, // Process handle not inheritable. - NULL, // Thread handle not inheritable. - FALSE, // Set handle inheritance to FALSE. - 0, // No creation flags. - NULL, // Use parent's environment block. - NULL, // Use parent's starting directory. - &si, // Pointer to STARTUPINFO structure. - &pi ) // Pointer to PROCESS_INFORMATION structure. - ){ - g_warning( "CreateProcess failed" ); - ret = FALSE; - } - else { - - WaitForSingleObject(pi.hProcess, INFINITE); - WaitForSingleObject(pi.hThread, INFINITE); - - CloseHandle(pi.hThread); - CloseHandle(pi.hProcess); - - if ( cb ) - cb(BABEL_DONE, NULL, user_data); - - ret = TRUE; - } - - g_strfreev(args2); - g_free( cmd ); - - return ret; -} -/* Windows */ -#else -/* Posix */ -gboolean babel_general_convert_to( VikTrwLayer *vt, BabelStatusFunc cb, gchar **args, const gchar *name_src, gpointer user_data ) -{ - gboolean ret = FALSE; - GPid pid; - GError *error = NULL; - gint babel_stdout; - - if (!a_file_export(vt, name_src, FILE_TYPE_GPX, NULL)) { - g_warning("%s(): error exporting to %s", __FUNCTION__, name_src); - return(FALSE); - } - - if (!g_spawn_async_with_pipes (NULL, args, NULL, 0, NULL, NULL, &pid, NULL, &babel_stdout, NULL, &error)) { - g_warning("Error : %s", error->message); - g_error_free(error); - ret = FALSE; - } else { - gchar line[512]; - FILE *diag; - diag = fdopen(babel_stdout, "r"); - setvbuf(diag, NULL, _IONBF, 0); - - while (fgets(line, sizeof(line), diag)) { - if ( cb ) - cb(BABEL_DIAG_OUTPUT, line, user_data); - } - if ( cb ) - cb(BABEL_DONE, NULL, user_data); - fclose(diag); - diag = NULL; - waitpid(pid, NULL, 0); - g_spawn_close_pid(pid); - - ret = TRUE; - } - - return ret; + return babel_general_convert (cb, args, user_data); } -#endif /* Posix */ -gboolean a_babel_convert_to( VikTrwLayer *vt, const char *babelargs, BabelStatusFunc cb, const char *to, gpointer user_data ) +gboolean a_babel_convert_to( VikTrwLayer *vt, const char *babelargs, const char *to, BabelStatusFunc cb, gpointer user_data ) { int i,j; int fd_src; - gchar *name_src; + gchar *name_src = NULL; gboolean ret = FALSE; gchar *args[64]; if ((fd_src = g_file_open_tmp("tmp-viking.XXXXXX", &name_src, NULL)) >= 0) { - gchar *gpsbabel_loc; close(fd_src); - gpsbabel_loc = g_find_program_in_path("gpsbabel"); - if (gpsbabel_loc ) { - gchar *unbuffer_loc = g_find_program_in_path("unbuffer"); gchar **sub_args = g_strsplit(babelargs, " ", 0); i = 0; @@ -452,14 +371,138 @@ gboolean a_babel_convert_to( VikTrwLayer *vt, const char *babelargs, BabelStatus ret = babel_general_convert_to ( vt, cb, args, name_src, user_data ); - g_free ( unbuffer_loc ); g_strfreev(sub_args); } else - g_warning("gpsbabel not found in PATH"); - g_free(gpsbabel_loc); + g_critical("gpsbabel not found in PATH"); + g_remove(name_src); + g_free(name_src); } - g_remove(name_src); - g_free(name_src); return ret; } + +static void set_mode(BabelMode mode, gchar *smode) +{ + mode.waypointsRead = smode[0] == 'r'; + mode.waypointsWrite = smode[1] == 'w'; + mode.tracksRead = smode[2] == 'r'; + mode.tracksWrite = smode[3] == 'w'; + mode.routesRead = smode[4] == 'r'; + mode.routesWrite = smode[5] == 'w'; +} + +/** + * load_feature: + * + * Load a single feature stored in the given line. + */ +static void load_feature_parse_line (gchar *line) +{ + gchar **tokens = g_strsplit ( line, "\t", 0 ); + if ( tokens != NULL + && tokens[0] != NULL ) { + if ( strcmp("serial", tokens[0]) == 0 ) { + if ( tokens[1] != NULL + && tokens[2] != NULL + && tokens[3] != NULL + && tokens[4] != NULL ) { + BabelDevice *device = g_malloc ( sizeof (BabelDevice) ); + set_mode (device->mode, tokens[1]); + device->name = g_strdup (tokens[2]); + device->label = g_strndup (tokens[4], 50); // Limit really long label text + a_babel_device_list = g_list_append (a_babel_device_list, device); + g_debug ("New gpsbabel device: %s", device->name); + } else { + g_warning ( "Unexpected gpsbabel format string: %s", line); + } + } else if ( strcmp("file", tokens[0]) == 0 ) { + if ( tokens[1] != NULL + && tokens[2] != NULL + && tokens[3] != NULL + && tokens[4] != NULL ) { + BabelFile *file = g_malloc ( sizeof (BabelFile) ); + set_mode (file->mode, tokens[1]); + file->name = g_strdup (tokens[2]); + file->ext = g_strdup (tokens[3]); + file->label = g_strdup (tokens[4]); + a_babel_file_list = g_list_append (a_babel_file_list, file); + g_debug ("New gpsbabel file: %s", file->name); + } else { + g_warning ( "Unexpected gpsbabel format string: %s", line); + } + } /* else: ignore */ + } else { + g_warning ( "Unexpected gpsbabel format string: %s", line); + } + g_strfreev ( tokens ); +} + +static void load_feature_cb (BabelProgressCode code, gpointer line, gpointer user_data) +{ + if (line != NULL) + load_feature_parse_line (line); +} + +static gboolean load_feature () +{ + int i; + gboolean ret = FALSE; + gchar *args[4]; + + if ( gpsbabel_loc ) { + i = 0; + if ( unbuffer_loc ) + args[i++] = unbuffer_loc; + args[i++] = gpsbabel_loc; + args[i++] = "-^3"; + args[i] = NULL; + + ret = babel_general_convert (load_feature_cb, args, NULL); + } else + g_critical("gpsbabel not found in PATH"); + + return ret; +} + +void a_babel_init () +{ + /* TODO allow to set gpsbabel path via command line */ + gpsbabel_loc = g_find_program_in_path( "gpsbabel" ); + if ( !gpsbabel_loc ) + g_critical( "gpsbabel not found in PATH" ); + unbuffer_loc = g_find_program_in_path( "unbuffer" ); + if ( !unbuffer_loc ) + g_warning( "unbuffer not found in PATH" ); + + load_feature (); +} + +void a_babel_uninit () +{ + g_free ( gpsbabel_loc ); + g_free ( unbuffer_loc ); + + if ( a_babel_file_list ) { + GList *gl; + for (gl = a_babel_file_list; gl != NULL; gl = g_list_next(gl)) { + BabelFile *file = gl->data; + g_free ( file->name ); + g_free ( file->ext ); + g_free ( file->label ); + g_free ( gl->data ); + } + g_list_free ( a_babel_file_list ); + } + + if ( a_babel_device_list ) { + GList *gl; + for (gl = a_babel_device_list; gl != NULL; gl = g_list_next(gl)) { + BabelDevice *device = gl->data; + g_free ( device->name ); + g_free ( device->label ); + g_free ( gl->data ); + } + g_list_free ( a_babel_device_list ); + } + +}