* Jan Glauber ([email protected]) wrote:
> Parse legacy LTT trace type format strings.
> Resurrected from lttng-ust (serialize.c) git commit id: 31607b3
> and slightly adopted to be useable by babeltrace-legacy.
>
> Signed-off-by: Jan Glauber <[email protected]>
> ---
> converter/ltt-type-parser.c | 303
> ++++++++++++++++++++++++++++++++++
> include/babeltrace/ltt-type-parser.h | 17 ++
> 2 files changed, 320 insertions(+)
> create mode 100644 converter/ltt-type-parser.c
> create mode 100644 include/babeltrace/ltt-type-parser.h
>
> diff --git a/converter/ltt-type-parser.c b/converter/ltt-type-parser.c
> new file mode 100644
> index 0000000..4290ee1
> --- /dev/null
> +++ b/converter/ltt-type-parser.c
> @@ -0,0 +1,303 @@
> +/*
> + * ltt-type-parser.c
> + *
> + * Parse legacy LTT trace type format strings.
> + * Resurrected from lttng-ust (serialize.c) git commit id: 31607b3
> + * and slightly adopted to be useable by babeltrace-legacy.
> + *
> + * Copyright Mathieu Desnoyers, March 2007.
The original license of this code was LGPLv2.1+. It cannot be relicensed
to MIT-license without prior acceptance of each contributor.
Thanks,
Mathieu
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> copy
> + * of this software and associated documentation files (the "Software"), to
> deal
> + * in the Software without restriction, including without limitation the
> rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> THE
> + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> THE
> + * SOFTWARE.
> + */
> +
> +#include <sys/types.h>
> +#include <stdint.h>
> +#include <string.h>
> +#include "babeltrace/ltt-type-parser.h"
> +
> +/*
> + * Restrictions:
> + * Field width and precision are *not* supported.
> + * %n not supported.
> + */
> +static const char *parse_c_type(const char *fmt, char *c_size,
> + enum ltt_type *c_type, char *base,
> + char *outfmt, int arch_size,
> + int size_long, int size_size_t)
> +{
> + int qualifier;
> +
> + /* process flags : ignore standard print formats for now. */
> +repeat:
> + switch (*fmt) {
> + case '-':
> + case '+':
> + case ' ':
> + case '#':
> + case '0':
> + ++fmt;
> + goto repeat;
> + }
> +
> + /* get the conversion qualifier */
> + qualifier = -1;
> + if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
> + *fmt == 'Z' || *fmt == 'z' || *fmt == 't' ||
> + *fmt == 'S') {
> + qualifier = *fmt;
> + ++fmt;
> + if (qualifier == 'l' && *fmt == 'l') {
> + qualifier = 'L';
> + ++fmt;
> + }
> + }
> +
> + if (outfmt) {
> + if (qualifier != -1)
> + *outfmt++ = (char)qualifier;
> + *outfmt++ = *fmt;
> + *outfmt = 0;
> + }
> +
> + switch (*fmt) {
> + case 'c':
> + *base = 10;
> + *c_type = LTT_TYPE_UNSIGNED_INT;
> + *c_size = sizeof(unsigned char);
> + goto parse_end;
> + case 's':
> + *c_type = LTT_TYPE_STRING;
> + goto parse_end;
> + case 'p':
> + *base = 16;
> + *c_type = LTT_TYPE_UNSIGNED_INT;
> + *c_size = arch_size;
> + goto parse_end;
> + case 'd':
> + case 'i':
> + *base = 10;
> + *c_type = LTT_TYPE_SIGNED_INT;
> + break;
> + case 'o':
> + *base = 8;
> + *c_type = LTT_TYPE_UNSIGNED_INT;
> + break;
> + case 'u':
> + *base = 10;
> + *c_type = LTT_TYPE_UNSIGNED_INT;
> + break;
> + case 'x':
> + case 'X':
> + *base = 16;
> + *c_type = LTT_TYPE_UNSIGNED_INT;
> + break;
> + default:
> + if (!*fmt)
> + --fmt;
> + goto parse_end;
> + }
> + switch (qualifier) {
> + case 'L':
> + *c_size = sizeof(long long);
> + break;
> + case 'l':
> + *c_size = size_long;
> + break;
> + case 'Z':
> + case 'z':
> + *c_size = size_size_t;
> + break;
> + case 'h':
> + *c_size = sizeof(short);
> + break;
> + default:
> + *c_size = sizeof(int);
> + }
> +
> +parse_end:
> + return fmt;
> +}
> +
> +static inline const char *parse_trace_type(const char *fmt,
> + char *trace_size, enum ltt_type *trace_type,
> + char *base, unsigned long *attributes,
> + int arch_size, int size_long, int size_size_t)
> +{
> + int qualifier;
> +
> + /* parse attributes. */
> +repeat:
> + switch (*fmt) {
> + case 'n':
> + *attributes |= (1<<1);
> + ++fmt;
> + goto repeat;
> + }
> +
> + /* get the conversion qualifier */
> + qualifier = -1;
> + if (*fmt == 'h' || *fmt == 'l' || *fmt == 'L' ||
> + *fmt == 'Z' || *fmt == 'z' || *fmt == 't' ||
> + *fmt == 'S' || *fmt == '1' || *fmt == '2' ||
> + *fmt == '4' || *fmt == 8) {
> + qualifier = *fmt;
> + ++fmt;
> + if (qualifier == 'l' && *fmt == 'l') {
> + qualifier = 'L';
> + ++fmt;
> + }
> + }
> +
> + switch (*fmt) {
> + case 'c':
> + *base = 10;
> + *trace_type = LTT_TYPE_UNSIGNED_INT;
> + *trace_size = sizeof(unsigned char);
> + goto parse_end;
> + case 's':
> + *trace_type = LTT_TYPE_STRING;
> + goto parse_end;
> + case 'p':
> + *base = 16;
> + *trace_type = LTT_TYPE_UNSIGNED_INT;
> + *trace_size = arch_size;
> + goto parse_end;
> + case 'd':
> + case 'i':
> + *base = 10;
> + *trace_type = LTT_TYPE_SIGNED_INT;
> + break;
> + case 'o':
> + *base = 8;
> + *trace_type = LTT_TYPE_UNSIGNED_INT;
> + break;
> + case 'u':
> + *base = 10;
> + *trace_type = LTT_TYPE_UNSIGNED_INT;
> + break;
> + case 'x':
> + case 'X':
> + *base = 16;
> + *trace_type = LTT_TYPE_UNSIGNED_INT;
> + break;
> + default:
> + if (!*fmt)
> + --fmt;
> + goto parse_end;
> + }
> + switch (qualifier) {
> + case 'L':
> + *trace_size = sizeof(long long);
> + break;
> + case 'l':
> + *trace_size = size_long;
> + break;
> + case 'Z':
> + case 'z':
> + *trace_size = size_size_t;
> + break;
> + case 'h':
> + *trace_size = sizeof(short);
> + break;
> + case '1':
> + *trace_size = sizeof(uint8_t);
> + break;
> + case '2':
> + *trace_size = sizeof(uint16_t);
> + break;
> + case '4':
> + *trace_size = sizeof(uint32_t);
> + break;
> + case '8':
> + *trace_size = sizeof(uint64_t);
> + break;
> + default:
> + *trace_size = sizeof(int);
> + }
> +
> +parse_end:
> + return fmt;
> +}
> +
> +int parse_format(char *out, const char *fmt,
> + int arch_size, int size_long, int size_size_t,
> + int (*write) (char *p, char trace_size, char c_size,
> + enum ltt_type c_type, char base, char *name))
> +{
> + char trace_size = 0, c_size = 0; /* 0 (unset), 1, 2, 4, 8 bytes
> */
> + char base = 0; /* 0 (unset), 10, 16 */
> + enum ltt_type trace_type = LTT_TYPE_NONE, c_type = LTT_TYPE_NONE;
> + unsigned long attributes = 0;
> + char name[256];
> + char *pname = name;
> + int len = 0;
> +
> + memset(name, 0, sizeof(name));
> +
> + for (; *fmt ; ++fmt) {
> + switch (*fmt) {
> + case '#':
> + /* tracetypes (#) */
> + ++fmt; /* skip first '#' */
> + if (*fmt == '#') /* Escaped ## */
> + break;
> + attributes = 0;
> + fmt = parse_trace_type(fmt, &trace_size, &trace_type,
> + &base, &attributes,
> + arch_size, size_long,
> size_size_t);
> + break;
> + case '%':
> + /* c types (%) */
> + ++fmt; /* skip first '%' */
> + if (*fmt == '%') /* Escaped %% */
> + break;
> + fmt = parse_c_type(fmt, &c_size, &c_type, &base, NULL,
> + arch_size, size_long, size_size_t);
> + /*
> + * Output c types if no trace types has been
> + * specified.
> + */
> + if (!trace_size)
> + trace_size = c_size;
> + if (trace_type == LTT_TYPE_NONE)
> + trace_type = c_type;
> + if (c_type == LTT_TYPE_STRING)
> + trace_type = LTT_TYPE_STRING;
> + /* perform write */
> + len += write(out + len, trace_size, c_size, trace_type,
> + base, name);
> + trace_size = 0;
> + c_size = 0;
> + trace_type = LTT_TYPE_NONE;
> + c_size = LTT_TYPE_NONE;
> + attributes = 0;
> + memset(name, 0, sizeof(name));
> + pname = name;
> + break;
> + case ' ':
> + /* skip spaces */
> + continue;
> + default:
> + /* default is to copy the text as parameter name */
> + *pname = *fmt;
> + pname++;
> + }
> + }
> + return len;
> +}
> diff --git a/include/babeltrace/ltt-type-parser.h
> b/include/babeltrace/ltt-type-parser.h
> new file mode 100644
> index 0000000..85d9a92
> --- /dev/null
> +++ b/include/babeltrace/ltt-type-parser.h
> @@ -0,0 +1,17 @@
> +#ifndef _LTT_TYPE_PARSER_H
> +#define _LTT_TYPE_PARSER_H
> +
> +#include <sys/types.h>
> +
> +enum ltt_type {
> + LTT_TYPE_SIGNED_INT,
> + LTT_TYPE_UNSIGNED_INT,
> + LTT_TYPE_STRING,
> + LTT_TYPE_NONE,
> +};
> +
> +int parse_format(char *out, const char *fmt, int arch_size,
> + int size_long, int size_size_t,
> + int (*write) (char *p, char trace_size, char c_size,
> + enum ltt_type c_type, char base, char *name));
> +#endif
> --
> 1.7.9.5
>
>
> _______________________________________________
> lttng-dev mailing list
> [email protected]
> http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
--
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com
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