JPH0640329B2 - Character processing apparatus and method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a character processing device that performs processing on a character string in which half-width characters (half-width characters) and full-width characters (full-width characters) are mixed.

[Description of the Prior Art and its Problems]

Conventionally, there is a character processing device that can handle a character string in which half-width characters (half-width characters) and full-width characters (full-width characters) are mixed.

The character processing device can be roughly divided into two methods. One is capable of processing character strings in units of half width, and the other is capable of processing character strings in units of full width.

The former is capable of inputting / outputting or editing both half-width characters and full-width characters at a position defined by a half-width unit, and the latter performs input / output editing processing only at a position defined by a full-width unit. Functionally superior to not being able to. However, in the former, the load on the hardware processing or software processing is large,
Further, there is a drawback that the operator has to specify the position of the target character to be input / edited in half width units, and the latter also has its own advantages.

The present invention relates to a device having the latter configuration,
It has been conventionally constructed, for example, as follows.

That is, the input from the keyboard can be input as half-width characters or full-width characters, whereby the operator creates sentences. At that time, be sure to input half-width characters in units of two characters so that two half-width characters can be handled in the same way as one full-width character. When you try to enter or edit a character string once entered, move the cursor to the corresponding position, but that position can be specified in full width unit, and it is always for half width characters. It will be specified in units of two half-width characters and handled in that unit. In this way, processing of a mixed character string of half-width characters and full-width characters is realized.

However, in the conventional character processing device of this type, one half-width character after the half-width character is deleted one by one in an attempt to delete one half-width character in the character string in which the half-width character string and the full-width character string are mixed. An attempt may be made to delete the full-width characters, and in that case, the position of the full-width character string that follows the half-width character string will remain in the same position forever even if part of the half-width character string is deleted. Only then, the spaces are not spread and the unnatural state occurs.

An object of the present invention is to delete one character in a half-width character string, to make the characters after that character one by one, and to add a new half-width space at the end. An object is to provide a character processing device that realizes deletion.

Another object of the present invention is to provide a character processing device that can delete one half-width character in a more natural manner in a character processing device that processes one full-width character or two half-width characters as a unit. Especially.

Another object of the present invention is to delete one character in a half-width character string, to make the characters after that character one by one, and to add a new half-width space at the end. In the character processing device, when the half width space code added at the end causes two (or more) characters to be lined up with a half width space, the two half width space codes are collectively deleted. Thus, a character processing device capable of deleting in a more natural form is provided by curving up the succeeding full-width character string and the like to the front.

A character processing device according to the present invention includes input means for inputting full-width characters and half-width characters, storage means for storing a character string in which full-width characters and half-width characters input by the input means are mixed, and half-width characters. Instructing means for instructing deletion of characters, deleting means for deleting half-width characters in accordance with an instruction of the instructing means, and when the half-width character string following the half-width characters deleted by the deleting means is moved forward by half width, In the case of a half-width dummy character that is added at the end of the half-width character string to prevent the display position of full-width characters following the half-width character string from being shifted, the half-width dummy character is deleted and the half-width character string is shifted to the half-width forward If the end of the half-width character string is not the half-width dummy character, the half-width character string is moved forward by half width,
Adjusting means for adding the half-width dummy character after the half-width character string.

Further, the character processing method according to the present invention stores the input full-width characters and half-width characters, displays the stored full-width characters and half-width characters on the display device, and when deletion of half-width characters is instructed, When the half-width character is deleted based on the instruction and the half-width character string following the deleted half-width character is displayed with the half-width justified, the end of the half-width character string is displayed at the display position of the full-width character. In the case of a half-width dummy character added to prevent deviation, the half-width dummy character is deleted, the half-width character string is moved forward by half width, and if the end of the half-width character string is not the half-width dummy character, the half-width character The row is justified by half width, and the half width dummy character is added after the half width character string.

[Example] An example of the present invention will be described.

FIG. 5 shows the configuration of this embodiment. Each component will be described below.

The CPU is a central processing unit and controls the present embodiment.

The ROM is a control memory that stores a control program, and stores the control program shown in FIGS. 7 to 10.

The RAM is a random access memory and is used as a work register for executing the control program stored in the control memory ROM.

KB1, KB2 and KB3 are keyboards, and the operator inputs to this apparatus. KB1 is a keyboard for inputting full-width characters, and when one of the keys in KB1 is pressed, the full-width character code shown in FIG. 6 (a) is output.

KB2 is a keyboard for entering half-width characters,
By pressing any two keys in KB2,
The data is output in the form of two half-width characters. FIG. 6 (b) is a code showing two half-width characters output at that time.

KB3 consists of a function key.

Initialization key IN used to start input
T, a half-width key HZ for instructing to half-width the input character string, left deletion for instructing to delete the left side of the two half-width character strings indicated by the cursor when deleting the input half-width character Key LD, right delete key RD to delete the right half of the two half-width characters pointed to by the cursor when deleting the half-width character entered, full delete to enter the full-width character entered A width deletion key AD, a full width key AZ for making the input character string full width, a cursor key CU for moving the cursor on the CRT, and the like.

The BUF1 is a buffer for storing character strings input from the keyboards KB1 and KB2, and information such as sentences is stored in this buffer.

The contents of BUF1 are displayed on DISP described later.

In the case of the present embodiment, the capacity of the buffer BUF1 is a capacity for storing 32 full-width characters.

BUF2 is a work buffer and is a buffer BUF.
It has the same capacity as 1.

CP is a cursor pointer, which is a register for storing the address of the cursor shown on the display device DISP, and associates the cursor on the display device DISP with the address of the buffer BUF1.

The DISP is a display device that displays the cursor at the position indicated by the cursor pointer CP and also displays the contents of the buffer BUF1. In the case of this embodiment, as shown in FIG. 1 (a), a character string of 8 horizontal characters and 4 vertical rows is displayed.

The operation of this embodiment having the above configuration will be described in detail with reference to FIGS.

When the power is turned on, the following operations are performed.

First, in step 1, a process for checking whether a key on the keyboard has been operated is performed. If the key is operated, the process proceeds to step 2 and subsequent steps, and the process corresponding to the operated key is performed.

1. Wait for data input from KB. If there is an input, go to step 2.

2. Input the data from KB (KB1, KB2, KB3).

3. The processing method is determined according to the type of input data. If it is the initialize key, proceed to step 4. If it is a character key, go to step 5. If it is the half width key, proceed to step 6. If it is the left delete key, proceed to step 7. If it is the right delete key, proceed to step 8. If it is the full width delete key, the process proceeds to step 9. If the key is the full width key, the process proceeds to step 10. If it is the cursor key, proceed to step 11.

4. Performs initialization processing. That is, various buffers and registers are initialized.

5. Performs character input processing. That is, the input data is written in the buffer BUF1. The writing position is the position of the address corresponding to the position pointed by the cursor pointer CP. After writing, move the cursor forward by one.

6. Perform half width processing. That is, the information stored in the buffer BUF1 is reduced to half width. Details will be described later.

7. Performs left deletion processing. That is, when the character at the position where the cursor is present consists of two half-width characters, the left part is deleted. Details will be described later.

8. Right delete processing is performed. That is, when the character at the position where the cursor is present consists of two half-width characters, the right part is deleted. Details will be described later.

9. Perform full width deletion. That is, if the character at the position where the cursor is located is a full-width character, that character is deleted and all the characters that follow are left-justified.

Ten. Perform full width processing. That is, all the character strings stored in the buffer BUF1 are made full width. Details will be described later.

11. Performs cursor movement processing. Move the cursor one step forward. If the cursor points to the end of the buffer BUF1, the cursor points to the beginning of the buffer BUF1. In order to advance the cursor by one, the cursor pointer CP may be incremented by one, and the cursor pointer CP may be cleared to 0 to bring the cursor to the position corresponding to the beginning of the buffer BUF1.

The half width processing of step 6 will be further described with reference to FIG. The contents of each step of this processing are shown below.

6.1 All the information contained in BUF1 is moved to BUF2. At this time, all the characters that are already half width are converted to full width and then moved to BUF2. If there is a full-width character immediately after the half-width space, that half-width space is meaningless and should not be moved to BUF2.

6.2 The information saved in BUF2 is returned to BUF1 again. At that time, be sure to transfer each two characters while doing the packing. In order to pack two full-width characters into two half-width characters, a half-width character code is obtained for each character, and a 16-bit packed code is obtained according to the format shown in FIG.

FIG. 1 shows the result obtained by the above-mentioned step 6.1.
Shown in (b). The details of this processing will be described later. The results obtained according to step 6.2 are
It is shown in Figure (c).

Details of step 6.1 are shown below with reference to FIG.

6.1.1 Extract the contents of buffer BUF1 one by one for each full width character.

6.1.2 The fetched data is saved in the buffer BUF2 in order, but before that, the cases are divided.

That is, if the data to be saved is full width character data, the process proceeds to step 6.1.5. If not 6.
Proceed to 1.3.

6.1.3 If the data following the data to be saved is full width character data, proceed to step 6.1.4, otherwise proceed to step 6.1.6.

6.1.4 The data to be saved is two-character half-width character data. If the character on the right side of the two characters is a space, proceed to step 6.1.7. If not, proceed to step 6.1.6.

6.1.5 The data to be saved is full width character data of one character, and the data is sequentially transferred to BUF2.

6.1.6 The data to be saved is two-character half-width character data, and the two-character half-width character data is converted into two-character full-width character data, which are sequentially transferred to BUF2. The data structure thereof is as shown in FIG. 6 and can be easily converted into the full width code.

6.1.7 The data to be saved is a two-character half-width character code, and the character to the right of it is a space. In this case, only the left character will be saved.

The steps from 6.1.1 to 6.1.7 are repeated until all the data in 6.1.8 BUF1 is transferred to BUF2 by the above method.

By the half width processing of step 6 described above, the contents of the buffer BUF1 having the form shown in FIG. 1 (a) are made to have the form shown in FIG. 1 (c). Therefore, a full width character and a half width character can be converted into a half width character string.

Next, the details of the left deletion processing of step 7 shown in FIG.
It will be described with reference to the drawings.

The details of each step are shown below.

7.1 Return if the character at the position of the cursor is a full width character. If not, ie if it consists of two half-width characters, proceed to step 7.2.

7.2 Determine the range to which the half width character string continues after the cursor.

7.3 Steps Delete the leading half-width characters within the range determined in 7.2, shift all the trailing half-width characters by 1 character to the left, and fill one trailing half-width space at the end.

7.4 If the half-width character immediately to the left of the half-width space added at the end is a space, proceed to step 7.5, otherwise return.

7.5 Delete the added half-width space and the left half-width space character at once. That is, the two half-width spaces are regarded as one full-width space and deleted, and all the characters that follow are shifted to the left by one full-width character. This process is equivalent to step 9.

When the contents shown in FIG. 3 (a) are contained in the buffer BUF1 by executing the above-mentioned processing, the left "D" of the "DE" designated by the cursor is deleted, and " Half-width character string "EFGHI" after "D"
All "JK" are padded one character before the full width (pad to the left) and a half width space is added at the end. The result of this processing is shown in FIG.

Next, details of the right deletion processing in step 8 will be described with reference to FIG. The contents of each step of the right deletion processing shown in FIG. 9 are as follows.

8.1 If the character at the position of the cursor is a full width character, return. If not, ie if it consists of two half-width characters, proceed to step 8.2.

8.2 After the cursor, find the range where half-width characters continue in succession.

8.3 If the character next to the position where the cursor is located is a half-width character, all the following half-width characters are left-justified by a half-width character (earlier) and a half-width space is added at the end.
Add one. The range is the range determined in step 8.2. If the next character after the cursor is a full width character, the right half width character of the two half width characters at the cursor position is changed to a half width space.

8.4 Immediately before the added or changed half-width space (direct left)
If the half-width character of is a half-width space, step 8.5
Go to, if not return.

8.5 Delete the two half-width space characters, the added or changed half-width space and the left-hand half-width space, in the same manner as one full-width space character. It is equivalent to step 7.5 or step 9.

The above processing is started and executed by moving the cursor mark to a desired position with the cursor key and then operating the right delete key. The contents of buffer BUF1 are the fourth
In case of deleting the character "E" of the current half width in the character string in which the characters of the half width and the full width are mixed as shown in Fig. (A), the content of the buffer BUF1 is the fourth by executing the above process.
The arrangement is as shown in FIG. Therefore, half-width character F
If you try to delete, the half-width characters that follow F will be left-justified or left-justified, and a half-width space will be added to the end of the half-width character string. Since two characters are consecutive, they are deleted in step 8.5, and the character strings after that are left-justified or left-justified as shown in FIG. 4 (c).

Next, details of the full width processing of step 10 will be described with reference to FIG. The contents of each step of the full width process shown in FIG. 10 are as follows.

10. Perform the same processing as in step 6.1.

10.2 Step 10.1 The information stored in the buffer BUF2 is returned to the buffer BUF1 as it is.

The above-mentioned processing is started and executed by operating the full-width key AZ. The contents of buffer BUF1 are shown in Fig. 2 (a).
When the character string is as shown in FIG.
Half-width characters are made full width as shown in (b). FIG. 2 (c) shows the contents of the buffer BUF2 returned to the buffer BUF1 again.

1. In this embodiment, the left delete key and the right delete key are provided separately, but for example, a control key or a shift key called a control key or a code key is used, and the shift key and the half-width delete key are combined. , Left deletion or right deletion may be instructed.

2. In the present embodiment, the full width unit delete key and the half width unit delete key are separately provided, but the mode may be switched by the character pointed by the cursor, for example. That is, if the cursor points to a full-width character, it means deletion of full-width characters, and if it points to a half-width character, it means deletion of half-width characters. When the cursor is pointing to a half-width character, the left half-width character is deleted when the delete key is simply pressed, and the right half-width character is deleted when the delete key is pressed while holding down the shift key. You can

3. As for internal processing, there is no space for full-width characters and half-width characters, and there is a function that can be processed in a pinched state (that is, even if there are an odd number of half-width characters, it can be processed without the need to add an extra space code). However, for example, if it is not possible to display only the display function of the CRT (that is, if an odd number of half-width characters are consecutive, it is necessary to add one half-width space for display), then display on the CRT. It is necessary to add a half-width space and display it only when trying to perform.

4. When a character string in which half-width characters and full-width characters are mixed is converted into a half-width character string in a lump, even if non-half-width characters are mixed in the full-width character string, this embodiment This process can be executed without any problem by devising the packing process in (1). That is, if it is necessary to pack half-width characters and non-half-width characters, a dummy character that can be half-width, for example, a space, may be inserted between them before performing the packing.
In addition, it is sufficient to restore characters that cannot be half-width, without intentionally packing.

5. In this embodiment, a half-width space is added to the end of the half-width character string to which the half-width character to be deleted is deleted when the half-width character is deleted. However, instead of the half-width space, another code, For example, a half width blank code may be added.

Further, in this embodiment, the half-width space is added in the buffer for storing the character string. However, the half-width space is not added in the buffer, and the half-width space may be added when displaying on a CRT, for example. good.

[Effects of the Invention] As described above, according to the character processing device of the present invention, it is possible to delete half-width characters in a more natural form in a character string in which half-width characters and full-width characters are mixed.

[Brief description of drawings]

FIGS. 1 (a), (b), and (c) are diagrams for explaining the half width, FIGS. 2 (a), (b), and (c) are diagrams for explaining the full width, and FIG. 3 (a). ), (B) and (c) are diagrams for explaining the left deletion of half-width characters, Fig. 4 (a), (b), and (c) are diagrams for explaining the right deletion of half-width characters, and Fig. 5 is this book. Block diagram showing an embodiment according to the invention, FIGS. 6 (a) and 6 (b) are diagrams for explaining codes, FIGS. 7 to 10 are diagrams showing a control procedure, KB3 ... Keyboard BUF1, BUF2 ... Buffer

Claims (2)

[Claims] 1. An input means for inputting full-width characters and half-width characters, a storage means for storing a character string in which the full-width characters and half-width characters input by the input means are mixed, and deletion of half-width characters. An instructing means for instructing, a deleting means for deleting the half-width character based on the instruction of the instructing means, and a half-width character string following the half-width character deleted by the deleting means is moved forward by half width, When the last is a half-width dummy character that is added to prevent the display position of the full-width character following the half-width character string from being shifted, the half-width dummy character is deleted, and the half-width character string is shifted forward by half width, When the end of the line is not the half-width dummy character, the half-width character string is moved forward by half width, and the half-width dummy character is added after the half-width character string. That character processing apparatus. 2. A full-width character and a half-width character that are input are stored, the stored full-width character and a half-width character are displayed on the display device, and when the deletion of the half-width character is instructed, the half-width character is instructed based on the instruction. Is added, and when the half-width character string following the deleted half-width character is displayed with half-width justified, the end of the half-width character string is added to prevent the display position of full-width characters following the half-width character string from shifting. If the half-width dummy character is deleted, the half-width dummy character is deleted, and the half-width character string is justified by half width. If the end of the half-width character string is not the half-width dummy character, the half-width character string is justified by half width. Then, the half-width dummy character is added after the half-width character string.