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Made base64_encode_block use a local variable for stepcount which is saved back to the struct before return

This commit is contained in:
Jordan Cristiano 2015-06-21 02:10:51 -04:00
parent b10aa30f9b
commit 3acc56055c
1 changed files with 6 additions and 3 deletions
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9
external/libb64-1.2.1/src/cencode.c vendored
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@ -26,6 +26,7 @@ char base64_encode_value(char value_in)
int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in) int base64_encode_block(const char* plaintext_in, int length_in, char* code_out, base64_encodestate* state_in)
{ {
int stepcount = state_in->stepcount;
const char* plainchar = plaintext_in; const char* plainchar = plaintext_in;
const char* const plaintextend = plaintext_in + length_in; const char* const plaintextend = plaintext_in + length_in;
char* codechar = code_out; char* codechar = code_out;
@ -42,6 +43,7 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
if (plainchar == plaintextend) if (plainchar == plaintextend)
{ {
state_in->step = step_A; state_in->step = step_A;
state_in->stepcount = stepcount;
state_in->result = result; state_in->result = result;
return codechar - code_out; return codechar - code_out;
} }
@ -53,6 +55,7 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
if (plainchar == plaintextend) if (plainchar == plaintextend)
{ {
state_in->step = step_B; state_in->step = step_B;
state_in->stepcount = stepcount;
state_in->result = result; state_in->result = result;
return codechar - code_out; return codechar - code_out;
} }
@ -64,6 +67,7 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
if (plainchar == plaintextend) if (plainchar == plaintextend)
{ {
state_in->step = step_C; state_in->step = step_C;
state_in->stepcount = stepcount;
state_in->result = result; state_in->result = result;
return codechar - code_out; return codechar - code_out;
} }
@ -73,11 +77,10 @@ int base64_encode_block(const char* plaintext_in, int length_in, char* code_out,
result = (fragment & 0x03f) >> 0; result = (fragment & 0x03f) >> 0;
*codechar++ = base64_encode_value(result); *codechar++ = base64_encode_value(result);
++(state_in->stepcount); if (++stepcount == CHARS_PER_LINE/4)
if (state_in->stepcount == CHARS_PER_LINE/4)
{ {
*codechar++ = '\n'; *codechar++ = '\n';
state_in->stepcount = 0; stepcount = 0;
} }
} }
} }