| 1 | /* |
| 2 | * Common Trace Format |
| 3 | * |
| 4 | * Strings read/write functions. |
| 5 | * |
| 6 | * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com> |
| 7 | * |
| 8 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 9 | * of this software and associated documentation files (the "Software"), to deal |
| 10 | * in the Software without restriction, including without limitation the rights |
| 11 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 12 | * copies of the Software, and to permit persons to whom the Software is |
| 13 | * furnished to do so, subject to the following conditions: |
| 14 | * |
| 15 | * The above copyright notice and this permission notice shall be included in |
| 16 | * all copies or substantial portions of the Software. |
| 17 | */ |
| 18 | |
| 19 | #include <babeltrace/ctf/types.h> |
| 20 | #include <limits.h> /* C99 limits */ |
| 21 | #include <string.h> |
| 22 | |
| 23 | void ctf_string_read(struct stream_pos *ppos, struct definition *definition) |
| 24 | { |
| 25 | struct definition_string *string_definition = |
| 26 | container_of(definition, struct definition_string, p); |
| 27 | const struct declaration_string *string_declaration = |
| 28 | string_definition->declaration; |
| 29 | struct ctf_stream_pos *pos = ctf_pos(ppos); |
| 30 | size_t len; |
| 31 | char *srcaddr; |
| 32 | |
| 33 | ctf_align_pos(pos, string_declaration->p.alignment); |
| 34 | srcaddr = ctf_get_pos_addr(pos); |
| 35 | len = strlen(srcaddr) + 1; |
| 36 | if (string_definition->alloc_len < len) { |
| 37 | string_definition->value = |
| 38 | g_realloc(string_definition->value, len); |
| 39 | string_definition->alloc_len = len; |
| 40 | } |
| 41 | memcpy(string_definition->value, srcaddr, len); |
| 42 | string_definition->len = len; |
| 43 | ctf_move_pos(pos, len); |
| 44 | } |
| 45 | |
| 46 | void ctf_string_write(struct stream_pos *ppos, |
| 47 | struct definition *definition) |
| 48 | { |
| 49 | struct definition_string *string_definition = |
| 50 | container_of(definition, struct definition_string, p); |
| 51 | const struct declaration_string *string_declaration = |
| 52 | string_definition->declaration; |
| 53 | struct ctf_stream_pos *pos = ctf_pos(ppos); |
| 54 | size_t len; |
| 55 | char *destaddr; |
| 56 | |
| 57 | ctf_align_pos(pos, string_declaration->p.alignment); |
| 58 | assert(string_definition->value != NULL); |
| 59 | len = string_definition->len; |
| 60 | if (pos->dummy) |
| 61 | goto end; |
| 62 | destaddr = ctf_get_pos_addr(pos); |
| 63 | memcpy(destaddr, string_definition->value, len); |
| 64 | end: |
| 65 | ctf_move_pos(pos, len); |
| 66 | } |