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Diffstat (limited to 'src/protocol/ArgParser.cxx')
| -rw-r--r-- | src/protocol/ArgParser.cxx | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/protocol/ArgParser.cxx b/src/protocol/ArgParser.cxx new file mode 100644 index 000000000..0ab19f7d4 --- /dev/null +++ b/src/protocol/ArgParser.cxx @@ -0,0 +1,191 @@ +/* + * Copyright (C) 2003-2013 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" +#include "ArgParser.hxx" +#include "Result.hxx" + +#include <glib.h> +#include <stdlib.h> + +bool +check_uint32(Client *client, uint32_t *dst, const char *s) +{ + char *test; + + *dst = strtoul(s, &test, 10); + if (test == s || *test != '\0') { + command_error(client, ACK_ERROR_ARG, + "Integer expected: %s", s); + return false; + } + return true; +} + +bool +check_int(Client *client, int *value_r, const char *s) +{ + char *test; + long value; + + value = strtol(s, &test, 10); + if (test == s || *test != '\0') { + command_error(client, ACK_ERROR_ARG, + "Integer expected: %s", s); + return false; + } + +#if G_MAXLONG > G_MAXINT + if (value < G_MININT || value > G_MAXINT) { + command_error(client, ACK_ERROR_ARG, + "Number too large: %s", s); + return false; + } +#endif + + *value_r = (int)value; + return true; +} + +bool +check_range(Client *client, unsigned *value_r1, unsigned *value_r2, + const char *s) +{ + char *test, *test2; + long value; + + value = strtol(s, &test, 10); + if (test == s || (*test != '\0' && *test != ':')) { + command_error(client, ACK_ERROR_ARG, + "Integer or range expected: %s", s); + return false; + } + + if (value == -1 && *test == 0) { + /* compatibility with older MPD versions: specifying + "-1" makes MPD display the whole list */ + *value_r1 = 0; + *value_r2 = G_MAXUINT; + return true; + } + + if (value < 0) { + command_error(client, ACK_ERROR_ARG, + "Number is negative: %s", s); + return false; + } + +#if G_MAXLONG > G_MAXUINT + if (value > G_MAXUINT) { + command_error(client, ACK_ERROR_ARG, + "Number too large: %s", s); + return false; + } +#endif + + *value_r1 = (unsigned)value; + + if (*test == ':') { + value = strtol(++test, &test2, 10); + if (test2 == test || *test2 != '\0') { + command_error(client, ACK_ERROR_ARG, + "Integer or range expected: %s", s); + return false; + } + + if (test == test2) + value = G_MAXUINT; + + if (value < 0) { + command_error(client, ACK_ERROR_ARG, + "Number is negative: %s", s); + return false; + } + +#if G_MAXLONG > G_MAXUINT + if (value > G_MAXUINT) { + command_error(client, ACK_ERROR_ARG, + "Number too large: %s", s); + return false; + } +#endif + *value_r2 = (unsigned)value; + } else { + *value_r2 = (unsigned)value + 1; + } + + return true; +} + +bool +check_unsigned(Client *client, unsigned *value_r, const char *s) +{ + unsigned long value; + char *endptr; + + value = strtoul(s, &endptr, 10); + if (endptr == s || *endptr != 0) { + command_error(client, ACK_ERROR_ARG, + "Integer expected: %s", s); + return false; + } + + if (value > G_MAXUINT) { + command_error(client, ACK_ERROR_ARG, + "Number too large: %s", s); + return false; + } + + *value_r = (unsigned)value; + return true; +} + +bool +check_bool(Client *client, bool *value_r, const char *s) +{ + long value; + char *endptr; + + value = strtol(s, &endptr, 10); + if (endptr == s || *endptr != 0 || (value != 0 && value != 1)) { + command_error(client, ACK_ERROR_ARG, + "Boolean (0/1) expected: %s", s); + return false; + } + + *value_r = !!value; + return true; +} + +bool +check_float(Client *client, float *value_r, const char *s) +{ + float value; + char *endptr; + + value = strtof(s, &endptr); + if (endptr == s || *endptr != 0) { + command_error(client, ACK_ERROR_ARG, + "Float expected: %s", s); + return false; + } + + *value_r = value; + return true; +} |