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help the compiler create more efficient code

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Patch from Michael <virtual_worlds@gmx.de>
Full text: As usual I have modified only minor things to remove warnigs when compiled as C++ code, have added some const-specifiers where possible to help the compiler create more efficient code and added some static-specifiers to make functions invisible to other modules.
This commit is contained in:
Robin Stuart 2017-05-29 10:43:47 +01:00
parent d08237d06e
commit b3a1b24d18
29 changed files with 275 additions and 298 deletions
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52
backend/hanxin.c
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@ -47,33 +47,33 @@
/* Find which submode to use for a text character */
int getsubmode(char input) {
int submode = 2;
if ((input >= '0') && (input <= '9')) {
submode = 1;
}
if ((input >= 'A') && (input <= 'Z')) {
submode = 1;
}
if ((input >= 'a') && (input <= 'z')) {
submode = 1;
}
return submode;
}
/* Calculate the approximate length of the binary string */
int calculate_binlength(char mode[], int source[], int length, int eci) {
static int calculate_binlength(char mode[], int source[], const size_t length, int eci) {
int i;
char lastmode = 't';
int est_binlen = 0;
int submode = 1;
if (eci != 3) {
est_binlen += 12;
}
i = 0;
do {
switch (mode[i]) {
@ -220,38 +220,38 @@ int isFourByte(int glyph, int glyph2) {
}
}
}
return valid;
}
/* Calculate mode switching */
void hx_define_mode(char mode[], int source[], int length) {
static void hx_define_mode(char mode[], int source[], const size_t length) {
int i;
char lastmode = 't';
int done;
i = 0;
do {
done = 0;
if (isRegion1(source[i])) {
mode[i] = '1';
done = 1;
i++;
}
if ((done == 0) && (isRegion2(source[i]))) {
mode[i] = '2';
done = 1;
i++;
}
if ((done == 0) && (isDoubleByte(source[i]))) {
mode[i] = 'd';
done = 1;
i++;
}
if ((done == 0) && (i < length - 1)) {
if (isFourByte(source[i], source[i + 1])) {
mode[i] = 'f';
@ -289,47 +289,47 @@ void hx_define_mode(char mode[], int source[], int length) {
/* Convert Text 1 sub-mode character to encoding value, as given in table 3 */
int lookup_text1(char input) {
int encoding_value = 0;
if ((input >= '0') && (input <= '9')) {
encoding_value = input - '0';
}
if ((input >= 'A') && (input <= 'Z')) {
encoding_value = input - 'A' + 10;
}
if ((input >= 'a') && (input <= 'z')) {
encoding_value = input - 'a' + 36;
}
return encoding_value;
}
/* Convert Text 2 sub-mode character to encoding value, as given in table 4 */
int lookup_text2(char input) {
int encoding_value = 0;
if ((input >= 0) && (input <= 27)) {
encoding_value = input;
}
if ((input >= ' ') && (input <= '/')) {
encoding_value = input - ' ' + 28;
}
if ((input >= '[') && (input <= 96)) {
encoding_value = input - '[' + 51;
}
if ((input >= '{') && (input <= 127)) {
encoding_value = input - '{' + 57;
}
return encoding_value;
}
/* Convert input data to binary stream */
void calculate_binary(char binary[], char mode[], int source[], int length, int eci, int debug) {
static void calculate_binary(char binary[], char mode[], int source[], const size_t length, const int eci, int debug) {
int block_length;
int position = 0;
int i, count, encoding_value;
@ -1236,12 +1236,12 @@ int hx_apply_bitmask(unsigned char *grid, int size) {
}
}
}
return best_pattern;
}
/* Han Xin Code - main */
int han_xin(struct zint_symbol *symbol, const unsigned char source[], int length) {
int han_xin(struct zint_symbol *symbol, const unsigned char source[], size_t length) {
int est_binlen;
int ecc_level = symbol->option_1;
int i, j, version, posn = 0;