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38 :
39 : #include "nsPrintfCString.h"
40 : #include <stdarg.h>
41 : #include "prprf.h"
42 :
43 :
44 : // though these classes define a fixed buffer, they do not set the F_FIXED
45 : // flag. this is because they are not intended to be modified after they have
46 : // been constructed. we could change this but it would require adding a new
47 : // class to the hierarchy, one that both this class and nsCAutoString would
48 : // inherit from. for now, we populate the fixed buffer, and then let the
49 : // nsCString code treat the buffer as if it were a dependent buffer.
50 :
51 14745 : nsPrintfCString::nsPrintfCString( const char_type* format, ... )
52 14745 : : string_type(mLocalBuffer, 0, F_TERMINATED)
53 : {
54 : va_list ap;
55 :
56 14745 : size_type logical_capacity = kLocalBufferSize;
57 14745 : size_type physical_capacity = logical_capacity + 1;
58 :
59 14745 : va_start(ap, format);
60 14745 : mLength = PR_vsnprintf(mData, physical_capacity, format, ap);
61 14745 : va_end(ap);
62 14745 : }
63 :
64 4119 : nsPrintfCString::nsPrintfCString( size_type n, const char_type* format, ... )
65 4119 : : string_type(mLocalBuffer, 0, F_TERMINATED)
66 : {
67 : va_list ap;
68 :
69 : // make sure there's at least |n| space
70 4119 : size_type logical_capacity = kLocalBufferSize;
71 4119 : if ( n > logical_capacity )
72 : {
73 4103 : if (!SetCapacity(n))
74 0 : return; // out of memory !!
75 4103 : logical_capacity = n;
76 : }
77 4119 : size_type physical_capacity = logical_capacity + 1;
78 :
79 4119 : va_start(ap, format);
80 4119 : mLength = PR_vsnprintf(mData, physical_capacity, format, ap);
81 4119 : va_end(ap);
82 : }
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