training: Fix typos in comments and strings

All of them were found by codespell.

Signed-off-by: Stefan Weil <sw@weilnetz.de>

training/GlyphLessFont.c

@@ -263,14 +263,14 @@ cmap_table cmap = {
     0x0000,          /* encodingID = 0 */
     0x20000000,      /* Offset of data */
     0x0600,          /* STart of Apple table (format 6) */
-    0x0C00,          /* lenght of table (12) */
+    0x0C00,          /* length of table (12) */
     0x0000,          /* Language must be 0 for non-Apple or
                         non-specific language */
     0x0000,          /* firstCode = 0 */
     0x0100,          /* number of codes is 1 */
     0x0000,          /* GID is 0 */
     0x0600,          /* Start of MS Table (format 4) */
-    0x0C00,          /* lenght of table (12) */
+    0x0C00,          /* length of table (12) */
     0x0000,          /* Language must be 0 for non-Apple or
                         non-specific language */
     0x0000,          /* firstCode = 0 */

training/boxchar.cpp

@@ -175,7 +175,7 @@ void BoxChar::InsertSpaces(bool rtl_rules, bool vertical_rules,
             right = prev->x;
           }
         }
-        // Left becomes the max right of all next boxes foward to the first
+        // Left becomes the max right of all next boxes forward to the first
         // space or newline.
         for (int j = i + 2; j < boxes->size() && (*boxes)[j]->box_ != NULL &&
                                 (*boxes)[j]->ch_ != "\t";

training/combine_tessdata.cpp

@@ -78,7 +78,7 @@ int main(int argc, char **argv) {
       printf("Error combining tessdata files into %s\n",
              output_file.string());
     } else {
-      printf("Output %s created sucessfully.\n", output_file.string());
+      printf("Output %s created successfully.\n", output_file.string());
     }
   } else if (argc >= 4 && (strcmp(argv[1], "-e") == 0 ||
                            strcmp(argv[1], "-u") == 0)) {

training/commontraining.cpp

@@ -318,7 +318,7 @@ const char *GetNextFilename(int argc, const char* const * argv) {
 
 /*---------------------------------------------------------------------------*/
 /**
- * This routine searches thru a list of labeled lists to find
+ * This routine searches through a list of labeled lists to find
  * a list with the specified label.  If a matching labeled list
  * cannot be found, NULL is returned.
  * @param List list to search
@@ -461,10 +461,10 @@ void FreeTrainingSamples(LIST CharList) {
   LIST FeatureList;
 
 
-  iterate(CharList) {  /* iterate thru all of the fonts */
+  iterate(CharList) {  /* iterate through all of the fonts */
     char_sample = (LABELEDLIST) first_node(CharList);
     FeatureList = char_sample->List;
-    iterate(FeatureList) {  /* iterate thru all of the classes */
+    iterate(FeatureList) {  /* iterate through all of the classes */
       FeatureSet = (FEATURE_SET) first_node(FeatureList);
       FreeFeatureSet(FeatureSet);
     }
@@ -743,7 +743,7 @@ void FreeLabeledClassList (
 {
   MERGE_CLASS	MergeClass;
 
-  iterate (ClassList) 		/* iterate thru all of the fonts */
+  iterate (ClassList) 		/* iterate through all of the fonts */
   {
     MergeClass = (MERGE_CLASS) first_node (ClassList);
     free (MergeClass->Label);
@@ -841,7 +841,7 @@ void FreeNormProtoList (
 {
   LABELEDLIST	char_sample;
 
-  iterate (CharList) 		/* iterate thru all of the fonts */
+  iterate (CharList) 		/* iterate through all of the fonts */
   {
     char_sample = (LABELEDLIST) first_node (CharList);
     FreeLabeledList (char_sample);

training/mergenf.cpp

@@ -149,7 +149,7 @@ void ComputeMergedProto (PROTO  p1,
 } /* ComputeMergedProto */
 
 /**
- * This routine searches thru all of the prototypes in
+ * This routine searches through all of the prototypes in
  * Class and returns the id of the proto which would provide
  * the best approximation of Prototype.  If no close
  * approximation can be found, NO_PROTO is returned.

training/pango_font_info.cpp

@@ -217,7 +217,7 @@ bool PangoFontInfo::ParseFontDescription(const PangoFontDescription *desc) {
                    == PANGO_VARIANT_SMALL_CAPS);
 
   is_bold_ = (pango_font_description_get_weight(desc) >= PANGO_WEIGHT_BOLD);
-  // We dont have a way to detect whether a font is of type Fraktur. The fonts
+  // We don't have a way to detect whether a font is of type Fraktur. The fonts
   // we currently use all have "Fraktur" in their family name, so we do a
   // fragile but functional check for that here.
   is_fraktur_ = (strcasestr(family, "Fraktur") != NULL);

training/stringrenderer.h

@@ -50,7 +50,7 @@ class StringRenderer {
   StringRenderer(const string& font_desc, int page_width, int page_height);
   ~StringRenderer();
 
-  // Renders the text with the chosen font and returns the byte offset upto
+  // Renders the text with the chosen font and returns the byte offset up to
   // which the text could be rendered so as to fit the specified page
   // dimensions.
   int RenderToImage(const char* text, int text_length, Pix** pix);