diff options
Diffstat (limited to 'src/dpdk_lib18/librte_cmdline/cmdline_parse_num.c')
| -rwxr-xr-x | src/dpdk_lib18/librte_cmdline/cmdline_parse_num.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/src/dpdk_lib18/librte_cmdline/cmdline_parse_num.c b/src/dpdk_lib18/librte_cmdline/cmdline_parse_num.c new file mode 100755 index 00000000..d8cf37f0 --- /dev/null +++ b/src/dpdk_lib18/librte_cmdline/cmdline_parse_num.c @@ -0,0 +1,402 @@ +/*- + * BSD LICENSE + * + * Copyright(c) 2010-2014 Intel Corporation. All rights reserved. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * * Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +/* + * Copyright (c) 2009, Olivier MATZ <zer0@droids-corp.org> + * All rights reserved. + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * * Neither the name of the University of California, Berkeley nor the + * names of its contributors may be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <stdio.h> +#include <stdint.h> +#include <inttypes.h> +#include <ctype.h> +#include <string.h> +#include <stdarg.h> +#include <errno.h> +#include <rte_string_fns.h> + +#include "cmdline_parse.h" +#include "cmdline_parse_num.h" + +#ifdef RTE_LIBRTE_CMDLINE_DEBUG +#define debug_printf(args...) printf(args) +#else +#define debug_printf(args...) do {} while(0) +#endif + +struct cmdline_token_ops cmdline_token_num_ops = { + .parse = cmdline_parse_num, + .complete_get_nb = NULL, + .complete_get_elt = NULL, + .get_help = cmdline_get_help_num, +}; + + +enum num_parse_state_t { + START, + DEC_NEG, + BIN, + HEX, + + ERROR, + + FIRST_OK, /* not used */ + ZERO_OK, + HEX_OK, + OCTAL_OK, + BIN_OK, + DEC_NEG_OK, + DEC_POS_OK, +}; + +/* Keep it sync with enum in .h */ +static const char * num_help[] = { + "UINT8", "UINT16", "UINT32", "UINT64", + "INT8", "INT16", "INT32", "INT64", +}; + +static inline int +add_to_res(unsigned int c, uint64_t *res, unsigned int base) +{ + /* overflow */ + if ( (UINT64_MAX - c) / base < *res ) { + return -1; + } + + *res = (uint64_t) (*res * base + c); + return 0; +} + +static int +check_res_size(struct cmdline_token_num_data *nd, unsigned ressize) +{ + switch (nd->type) { + case INT8: + case UINT8: + if (ressize < sizeof(int8_t)) + return -1; + break; + case INT16: + case UINT16: + if (ressize < sizeof(int16_t)) + return -1; + break; + case INT32: + case UINT32: + if (ressize < sizeof(int32_t)) + return -1; + break; + case INT64: + case UINT64: + if (ressize < sizeof(int64_t)) + return -1; + break; + default: + return -1; + } + return 0; +} + +/* parse an int */ +int +cmdline_parse_num(cmdline_parse_token_hdr_t *tk, const char *srcbuf, void *res, + unsigned ressize) +{ + struct cmdline_token_num_data nd; + enum num_parse_state_t st = START; + const char * buf; + char c; + uint64_t res1 = 0; + + if (!tk) + return -1; + + if (!srcbuf || !*srcbuf) + return -1; + + buf = srcbuf; + c = *buf; + + memcpy(&nd, &((struct cmdline_token_num *)tk)->num_data, sizeof(nd)); + + /* check that we have enough room in res */ + if (res) { + if (check_res_size(&nd, ressize) < 0) + return -1; + } + + while ( st != ERROR && c && ! cmdline_isendoftoken(c) ) { + debug_printf("%c %x -> ", c, c); + switch (st) { + case START: + if (c == '-') { + st = DEC_NEG; + } + else if (c == '0') { + st = ZERO_OK; + } + else if (c >= '1' && c <= '9') { + if (add_to_res(c - '0', &res1, 10) < 0) + st = ERROR; + else + st = DEC_POS_OK; + } + else { + st = ERROR; + } + break; + + case ZERO_OK: + if (c == 'x') { + st = HEX; + } + else if (c == 'b') { + st = BIN; + } + else if (c >= '0' && c <= '7') { + if (add_to_res(c - '0', &res1, 10) < 0) + st = ERROR; + else + st = OCTAL_OK; + } + else { + st = ERROR; + } + break; + + case DEC_NEG: + if (c >= '0' && c <= '9') { + if (add_to_res(c - '0', &res1, 10) < 0) + st = ERROR; + else + st = DEC_NEG_OK; + } + else { + st = ERROR; + } + break; + + case DEC_NEG_OK: + if (c >= '0' && c <= '9') { + if (add_to_res(c - '0', &res1, 10) < 0) + st = ERROR; + } + else { + st = ERROR; + } + break; + + case DEC_POS_OK: + if (c >= '0' && c <= '9') { + if (add_to_res(c - '0', &res1, 10) < 0) + st = ERROR; + } + else { + st = ERROR; + } + break; + + case HEX: + st = HEX_OK; + /* no break */ + case HEX_OK: + if (c >= '0' && c <= '9') { + if (add_to_res(c - '0', &res1, 16) < 0) + st = ERROR; + } + else if (c >= 'a' && c <= 'f') { + if (add_to_res(c - 'a' + 10, &res1, 16) < 0) + st = ERROR; + } + else if (c >= 'A' && c <= 'F') { + if (add_to_res(c - 'A' + 10, &res1, 16) < 0) + st = ERROR; + } + else { + st = ERROR; + } + break; + + + case OCTAL_OK: + if (c >= '0' && c <= '7') { + if (add_to_res(c - '0', &res1, 8) < 0) + st = ERROR; + } + else { + st = ERROR; + } + break; + + case BIN: + st = BIN_OK; + /* no break */ + case BIN_OK: + if (c >= '0' && c <= '1') { + if (add_to_res(c - '0', &res1, 2) < 0) + st = ERROR; + } + else { + st = ERROR; + } + break; + default: + debug_printf("not impl "); + + } + + debug_printf("(%"PRIu64")\n", res1); + + buf ++; + c = *buf; + + /* token too long */ + if (buf-srcbuf > 127) + return -1; + } + + switch (st) { + case ZERO_OK: + case DEC_POS_OK: + case HEX_OK: + case OCTAL_OK: + case BIN_OK: + if ( nd.type == INT8 && res1 <= INT8_MAX ) { + if (res) *(int8_t *)res = (int8_t) res1; + return (buf-srcbuf); + } + else if ( nd.type == INT16 && res1 <= INT16_MAX ) { + if (res) *(int16_t *)res = (int16_t) res1; + return (buf-srcbuf); + } + else if ( nd.type == INT32 && res1 <= INT32_MAX ) { + if (res) *(int32_t *)res = (int32_t) res1; + return (buf-srcbuf); + } + else if ( nd.type == INT64 && res1 <= INT64_MAX ) { + if (res) *(int64_t *)res = (int64_t) res1; + return (buf-srcbuf); + } + else if ( nd.type == UINT8 && res1 <= UINT8_MAX ) { + if (res) *(uint8_t *)res = (uint8_t) res1; + return (buf-srcbuf); + } + else if (nd.type == UINT16 && res1 <= UINT16_MAX ) { + if (res) *(uint16_t *)res = (uint16_t) res1; + return (buf-srcbuf); + } + else if ( nd.type == UINT32 && res1 <= UINT32_MAX ) { + if (res) *(uint32_t *)res = (uint32_t) res1; + return (buf-srcbuf); + } + else if ( nd.type == UINT64 ) { + if (res) *(uint64_t *)res = res1; + return (buf-srcbuf); + } + else { + return -1; + } + break; + + case DEC_NEG_OK: + if ( nd.type == INT8 && res1 <= INT8_MAX + 1 ) { + if (res) *(int8_t *)res = (int8_t) (-res1); + return (buf-srcbuf); + } + else if ( nd.type == INT16 && res1 <= (uint16_t)INT16_MAX + 1 ) { + if (res) *(int16_t *)res = (int16_t) (-res1); + return (buf-srcbuf); + } + else if ( nd.type == INT32 && res1 <= (uint32_t)INT32_MAX + 1 ) { + if (res) *(int32_t *)res = (int32_t) (-res1); + return (buf-srcbuf); + } + else if ( nd.type == INT64 && res1 <= (uint64_t)INT64_MAX + 1 ) { + if (res) *(int64_t *)res = (int64_t) (-res1); + return (buf-srcbuf); + } + else { + return -1; + } + break; + default: + debug_printf("error\n"); + return -1; + } +} + + +/* parse an int */ +int +cmdline_get_help_num(cmdline_parse_token_hdr_t *tk, char *dstbuf, unsigned int size) +{ + struct cmdline_token_num_data nd; + int ret; + + if (!tk) + return -1; + + memcpy(&nd, &((struct cmdline_token_num *)tk)->num_data, sizeof(nd)); + + /* should not happen.... don't so this test */ + /* if (nd.type >= (sizeof(num_help)/sizeof(const char *))) */ + /* return -1; */ + + ret = snprintf(dstbuf, size, "%s", num_help[nd.type]); + if (ret < 0) + return -1; + dstbuf[size-1] = '\0'; + return 0; +} |