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As get_best_eci() can no longer return 0 remove caller checks

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library: simplify dealing one-letter escapes into one case;
  other fiddlings (`first_err` -> `warn_number`)
This commit is contained in:
gitlost
2024-03-05 22:09:05 +00:00
parent 11b3c18aed
commit 624574a64c
10 changed files with 80 additions and 144 deletions
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180
backend/library.c
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@@ -130,15 +130,13 @@ void ZBarcode_Clear(struct zint_symbol *symbol) {
void ZBarcode_Reset(struct zint_symbol *symbol) {
if (!symbol) return;
if (symbol->bitmap != NULL) {
if (symbol->bitmap != NULL)
free(symbol->bitmap);
}
if (symbol->alphamap != NULL) {
if (symbol->alphamap != NULL)
free(symbol->alphamap);
}
if (symbol->memfile != NULL) {
if (symbol->memfile != NULL)
free(symbol->memfile);
}
vector_free(symbol);
memset(symbol, 0, sizeof(*symbol));
@@ -156,7 +154,6 @@ void ZBarcode_Delete(struct zint_symbol *symbol) {
if (symbol->memfile != NULL)
free(symbol->memfile);
/* If there is a rendered version, ensure its memory is released */
vector_free(symbol);
free(symbol);
@@ -748,6 +745,9 @@ static int esc_base(struct zint_symbol *symbol, unsigned char *input_string, int
/* Helper to parse escape sequences. If `escaped_string` NULL, calculates length only */
static int escape_char_process(struct zint_symbol *symbol, unsigned char *input_string, int *p_length,
unsigned char *escaped_string) {
/* NUL EOT BEL BS HT LF VT FF CR ESC GS RS \ */
static const char escs[] = { '0', 'E', 'a', 'b', 't', 'n', 'v', 'f', 'r', 'e', 'G', 'R', '\\', '\0' };
static const char vals[] = { 0x00, 0x04, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x1B, 0x1D, 0x1E, 0x5C };
const int length = *p_length;
int in_posn = 0, out_posn = 0;
int ch;
@@ -766,7 +766,19 @@ static int escape_char_process(struct zint_symbol *symbol, unsigned char *input_
/* NOTE: if add escape character, must also update regex in "frontend_qt/datawindow.php" */
switch (ch) {
case '0':
if (escaped_string) escaped_string[out_posn] = 0x00; /* Null */
case 'E':
case 'a':
case 'b':
case 't':
case 'n':
case 'v':
case 'f':
case 'r':
case 'e':
case 'G':
case 'R':
case '\\':
if (escaped_string) escaped_string[out_posn] = vals[posn(escs, ch)];
in_posn += 2;
break;
case '^': /* CODE128 specific */
@@ -791,50 +803,6 @@ static int escape_char_process(struct zint_symbol *symbol, unsigned char *input_
}
}
break;
case 'E':
if (escaped_string) escaped_string[out_posn] = 0x04; /* End of Transmission */
in_posn += 2;
break;
case 'a':
if (escaped_string) escaped_string[out_posn] = 0x07; /* Bell */
in_posn += 2;
break;
case 'b':
if (escaped_string) escaped_string[out_posn] = 0x08; /* Backspace */
in_posn += 2;
break;
case 't':
if (escaped_string) escaped_string[out_posn] = 0x09; /* Horizontal tab */
in_posn += 2;
break;
case 'n':
if (escaped_string) escaped_string[out_posn] = 0x0a; /* Line feed */
in_posn += 2;
break;
case 'v':
if (escaped_string) escaped_string[out_posn] = 0x0b; /* Vertical tab */
in_posn += 2;
break;
case 'f':
if (escaped_string) escaped_string[out_posn] = 0x0c; /* Form feed */
in_posn += 2;
break;
case 'r':
if (escaped_string) escaped_string[out_posn] = 0x0d; /* Carriage return */
in_posn += 2;
break;
case 'e':
if (escaped_string) escaped_string[out_posn] = 0x1b; /* Escape */
in_posn += 2;
break;
case 'G':
if (escaped_string) escaped_string[out_posn] = 0x1d; /* Group Separator */
in_posn += 2;
break;
case 'R':
if (escaped_string) escaped_string[out_posn] = 0x1e; /* Record Separator */
in_posn += 2;
break;
case 'd':
case 'o':
case 'x':
@@ -844,10 +812,6 @@ static int escape_char_process(struct zint_symbol *symbol, unsigned char *input_
if (escaped_string) escaped_string[out_posn] = val;
in_posn += 4 + (ch != 'x');
break;
case '\\':
if (escaped_string) escaped_string[out_posn] = '\\';
in_posn += 2;
break;
case 'u':
case 'U':
if (in_posn + 6 > length || (ch == 'U' && in_posn + 8 > length)) {
@@ -1294,16 +1258,14 @@ int ZBarcode_Encode_Segs(struct zint_symbol *symbol, const struct zint_seg segs[
&& (symbol->input_mode & 0x07) == UNICODE_MODE) {
/* Try another ECI mode */
const int first_eci_set = get_best_eci_segs(symbol, local_segs, seg_count);
if (first_eci_set != 0) {
error_number = extended_or_reduced_charset(symbol, local_segs, seg_count);
/* Inclusion of ECI more noteworthy than other warnings, so overwrite (if any) */
if (error_number < ZINT_ERROR) {
error_number = ZINT_WARN_USES_ECI;
if (!(symbol->debug & ZINT_DEBUG_TEST)) {
sprintf(symbol->errtxt, "222: Encoded data includes ECI %d", first_eci_set);
}
if (symbol->debug & ZINT_DEBUG_PRINT) printf("Added ECI %d\n", first_eci_set);
error_number = extended_or_reduced_charset(symbol, local_segs, seg_count);
/* Inclusion of ECI more noteworthy than other warnings, so overwrite (if any) */
if (error_number < ZINT_ERROR) {
error_number = ZINT_WARN_USES_ECI;
if (!(symbol->debug & ZINT_DEBUG_TEST)) {
sprintf(symbol->errtxt, "222: Encoded data includes ECI %d", first_eci_set);
}
if (symbol->debug & ZINT_DEBUG_PRINT) printf("Added ECI %d\n", first_eci_set);
}
}
@@ -1345,8 +1307,7 @@ static int check_output_args(struct zint_symbol *symbol, int rotate_angle) {
return 0;
}
struct zint_filetypes { const char extension[4]; int is_raster; int filetype; };
static const struct zint_filetypes filetypes[] = {
static const struct { const char extension[4]; int is_raster; int filetype; } filetypes[] = {
{ "BMP", 1, OUT_BMP_FILE }, { "EMF", 0, OUT_EMF_FILE }, { "EPS", 0, OUT_EPS_FILE },
{ "GIF", 1, OUT_GIF_FILE }, { "PCX", 1, OUT_PCX_FILE }, { "PNG", 1, OUT_PNG_FILE },
{ "SVG", 0, OUT_SVG_FILE }, { "TIF", 1, OUT_TIF_FILE }, { "TXT", 0, 0 }
@@ -1445,19 +1406,16 @@ int ZBarcode_Encode_and_Print(struct zint_symbol *symbol, const unsigned char *s
int ZBarcode_Encode_Segs_and_Print(struct zint_symbol *symbol, const struct zint_seg segs[], const int seg_count,
int rotate_angle) {
int error_number;
int first_err;
int warn_number;
error_number = ZBarcode_Encode_Segs(symbol, segs, seg_count);
if (error_number >= ZINT_ERROR) {
return error_number;
warn_number = ZBarcode_Encode_Segs(symbol, segs, seg_count);
if (warn_number >= ZINT_ERROR) {
return warn_number;
}
first_err = error_number;
error_number = ZBarcode_Print(symbol, rotate_angle);
if (error_number == 0) {
error_number = first_err;
}
return error_number;
return error_number ? error_number : warn_number;
}
/* Encode and output a symbol to memory as raster (`symbol->bitmap`) */
@@ -1478,20 +1436,16 @@ int ZBarcode_Encode_and_Buffer(struct zint_symbol *symbol, const unsigned char *
int ZBarcode_Encode_Segs_and_Buffer(struct zint_symbol *symbol, const struct zint_seg segs[],
const int seg_count, int rotate_angle) {
int error_number;
int first_err;
int warn_number;
error_number = ZBarcode_Encode_Segs(symbol, segs, seg_count);
if (error_number >= ZINT_ERROR) {
return error_number;
warn_number = ZBarcode_Encode_Segs(symbol, segs, seg_count);
if (warn_number >= ZINT_ERROR) {
return warn_number;
}
first_err = error_number;
error_number = ZBarcode_Buffer(symbol, rotate_angle);
if (error_number == 0) {
error_number = first_err;
}
return error_number;
return error_number ? error_number : warn_number;
}
/* Encode and output a symbol to memory as vector (`symbol->vector`) */
@@ -1512,20 +1466,16 @@ int ZBarcode_Encode_and_Buffer_Vector(struct zint_symbol *symbol, const unsigned
int ZBarcode_Encode_Segs_and_Buffer_Vector(struct zint_symbol *symbol, const struct zint_seg segs[],
const int seg_count, int rotate_angle) {
int error_number;
int first_err;
int warn_number;
error_number = ZBarcode_Encode_Segs(symbol, segs, seg_count);
if (error_number >= ZINT_ERROR) {
return error_number;
warn_number = ZBarcode_Encode_Segs(symbol, segs, seg_count);
if (warn_number >= ZINT_ERROR) {
return warn_number;
}
first_err = error_number;
error_number = ZBarcode_Buffer_Vector(symbol, rotate_angle);
if (error_number == 0) {
error_number = first_err;
}
return error_number;
return error_number ? error_number : warn_number;
}
/* Encode a barcode using input data from file `filename` */
@@ -1624,58 +1574,46 @@ int ZBarcode_Encode_File(struct zint_symbol *symbol, const char *filename) {
/* Encode a symbol using input data from file `filename` and output to file `symbol->outfile` */
int ZBarcode_Encode_File_and_Print(struct zint_symbol *symbol, const char *filename, int rotate_angle) {
int error_number;
int first_err;
int warn_number;
error_number = ZBarcode_Encode_File(symbol, filename);
if (error_number >= ZINT_ERROR) {
return error_number;
warn_number = ZBarcode_Encode_File(symbol, filename);
if (warn_number >= ZINT_ERROR) {
return warn_number;
}
first_err = error_number;
error_number = ZBarcode_Print(symbol, rotate_angle);
if (error_number == 0) {
error_number = first_err;
}
return error_number;
return error_number ? error_number : warn_number;
}
/* Encode a symbol using input data from file `filename` and output to memory as raster (`symbol->bitmap`) */
int ZBarcode_Encode_File_and_Buffer(struct zint_symbol *symbol, char const *filename, int rotate_angle) {
int error_number;
int first_err;
int warn_number;
error_number = ZBarcode_Encode_File(symbol, filename);
if (error_number >= ZINT_ERROR) {
return error_number;
warn_number = ZBarcode_Encode_File(symbol, filename);
if (warn_number >= ZINT_ERROR) {
return warn_number;
}
first_err = error_number;
error_number = ZBarcode_Buffer(symbol, rotate_angle);
if (error_number == 0) {
error_number = first_err;
}
return error_number;
return error_number ? error_number : warn_number;
}
/* Encode a symbol using input data from file `filename` and output to memory as vector (`symbol->vector`) */
int ZBarcode_Encode_File_and_Buffer_Vector(struct zint_symbol *symbol, const char *filename, int rotate_angle) {
int error_number;
int first_err;
int warn_number;
error_number = ZBarcode_Encode_File(symbol, filename);
if (error_number >= ZINT_ERROR) {
return error_number;
warn_number = ZBarcode_Encode_File(symbol, filename);
if (warn_number >= ZINT_ERROR) {
return warn_number;
}
first_err = error_number;
error_number = ZBarcode_Buffer_Vector(symbol, rotate_angle);
if (error_number == 0) {
error_number = first_err;
}
return error_number;
return error_number ? error_number : warn_number;
}
/* Checks whether a symbology is supported */