diff options
Diffstat (limited to 'mysql/mysys/string.c')
| -rw-r--r-- | mysql/mysys/string.c | 187 |
1 files changed, 0 insertions, 187 deletions
diff --git a/mysql/mysys/string.c b/mysql/mysys/string.c deleted file mode 100644 index 693c28c..0000000 --- a/mysql/mysys/string.c +++ /dev/null @@ -1,187 +0,0 @@ -/* Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved. - - 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; version 2 of the License. - - 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 St, Fifth Floor, Boston, MA 02110-1301 USA */ - -/* - Code for handling strings with can grow dynamicly. - Copyright Monty Program KB. - By monty. -*/ - -#include "mysys_priv.h" -#include "my_sys.h" -#include <m_string.h> - -my_bool init_dynamic_string(DYNAMIC_STRING *str, const char *init_str, - size_t init_alloc, size_t alloc_increment) -{ - size_t length; - DBUG_ENTER("init_dynamic_string"); - - if (!alloc_increment) - alloc_increment=128; - length=1; - if (init_str && (length= strlen(init_str)+1) < init_alloc) - init_alloc=((length+alloc_increment-1)/alloc_increment)*alloc_increment; - if (!init_alloc) - init_alloc=alloc_increment; - - if (!(str->str=(char*) my_malloc(key_memory_DYNAMIC_STRING, - init_alloc,MYF(MY_WME)))) - DBUG_RETURN(TRUE); - str->length=length-1; - if (init_str) - memcpy(str->str,init_str,length); - str->max_length=init_alloc; - str->alloc_increment=alloc_increment; - DBUG_RETURN(FALSE); -} - - -my_bool dynstr_set(DYNAMIC_STRING *str, const char *init_str) -{ - uint length=0; - DBUG_ENTER("dynstr_set"); - - if (init_str && (length= (uint) strlen(init_str)+1) > str->max_length) - { - str->max_length=((length+str->alloc_increment-1)/str->alloc_increment)* - str->alloc_increment; - if (!str->max_length) - str->max_length=str->alloc_increment; - if (!(str->str=(char*) my_realloc(key_memory_DYNAMIC_STRING, - str->str,str->max_length,MYF(MY_WME)))) - DBUG_RETURN(TRUE); - } - if (init_str) - { - str->length=length-1; - memcpy(str->str,init_str,length); - } - else - str->length=0; - DBUG_RETURN(FALSE); -} - - -my_bool dynstr_realloc(DYNAMIC_STRING *str, size_t additional_size) -{ - DBUG_ENTER("dynstr_realloc"); - - if (!additional_size) DBUG_RETURN(FALSE); - if (str->length + additional_size > str->max_length) - { - str->max_length=((str->length + additional_size+str->alloc_increment-1)/ - str->alloc_increment)*str->alloc_increment; - if (!(str->str=(char*) my_realloc(key_memory_DYNAMIC_STRING, - str->str,str->max_length,MYF(MY_WME)))) - DBUG_RETURN(TRUE); - } - DBUG_RETURN(FALSE); -} - - -my_bool dynstr_append(DYNAMIC_STRING *str, const char *append) -{ - return dynstr_append_mem(str,append,(uint) strlen(append)); -} - - -my_bool dynstr_append_mem(DYNAMIC_STRING *str, const char *append, - size_t length) -{ - char *new_ptr; - if (str->length+length >= str->max_length) - { - size_t new_length=(str->length+length+str->alloc_increment)/ - str->alloc_increment; - new_length*=str->alloc_increment; - if (!(new_ptr=(char*) my_realloc(key_memory_DYNAMIC_STRING, - str->str,new_length,MYF(MY_WME)))) - return TRUE; - str->str=new_ptr; - str->max_length=new_length; - } - memcpy(str->str + str->length,append,length); - str->length+=length; - str->str[str->length]=0; /* Safety for C programs */ - return FALSE; -} - - -my_bool dynstr_trunc(DYNAMIC_STRING *str, size_t n) -{ - str->length-=n; - str->str[str->length]= '\0'; - return FALSE; -} - -/* - Concatenates any number of strings, escapes any OS quote in the result then - surround the whole affair in another set of quotes which is finally appended - to specified DYNAMIC_STRING. This function is especially useful when - building strings to be executed with the system() function. - - @param str Dynamic String which will have addtional strings appended. - @param append String to be appended. - @param ... Optional. Additional string(s) to be appended. - - @note The final argument in the list must be NullS even if no additional - options are passed. - - @return True = Success. -*/ - -my_bool dynstr_append_os_quoted(DYNAMIC_STRING *str, const char *append, ...) -{ -#ifdef _WIN32 - const char *quote_str= "\""; - const uint quote_len= 1; -#else - const char *quote_str= "\'"; - const uint quote_len= 1; -#endif /* _WIN32 */ - my_bool ret= TRUE; - va_list dirty_text; - - ret&= dynstr_append_mem(str, quote_str, quote_len); /* Leading quote */ - va_start(dirty_text, append); - while (append != NullS) - { - const char *cur_pos= append; - const char *next_pos= cur_pos; - - /* Search for quote in each string and replace with escaped quote */ - while(*(next_pos= strcend(cur_pos, quote_str[0])) != '\0') - { - ret&= dynstr_append_mem(str, cur_pos, (uint) (next_pos - cur_pos)); - ret&= dynstr_append_mem(str ,"\\", 1); - ret&= dynstr_append_mem(str, quote_str, quote_len); - cur_pos= next_pos + 1; - } - ret&= dynstr_append_mem(str, cur_pos, (uint) (next_pos - cur_pos)); - append= va_arg(dirty_text, char *); - } - va_end(dirty_text); - ret&= dynstr_append_mem(str, quote_str, quote_len); /* Trailing quote */ - - return ret; -} - - -void dynstr_free(DYNAMIC_STRING *str) -{ - my_free(str->str); - str->str= NULL; -} |