diff --git a/2000/jarijyrki/Makefile b/2000/jarijyrki/Makefile index 020ebb588..5744b4ebb 100644 --- a/2000/jarijyrki/Makefile +++ b/2000/jarijyrki/Makefile @@ -115,7 +115,7 @@ ENTRY= jarijyrki PROG= ${ENTRY} # OBJ= ${PROG}.o -DATA= sheet1.info +DATA= finance.sheet TARGET= ${PROG} # ALT_OBJ= diff --git a/2000/jarijyrki/README.md b/2000/jarijyrki/README.md index f373ae1a4..9c5a7b3d9 100644 --- a/2000/jarijyrki/README.md +++ b/2000/jarijyrki/README.md @@ -10,7 +10,7 @@ Jyrki Holopainen Forsellesintie 1-3A10 02700 Kauniainen Finland - + ## To build: @@ -36,353 +36,431 @@ You will need a system capable of displaying the results of X Window programs. ## Try: ```sh -./jarijyrki < sheet1.info > myedits.info +./jarijyrki < finance.sheet > myedits.info ``` +Then click on cell `C3` and type in the following: + +``` +C5 C6 C7 @ +``` + +Click on cell `D4` and type in the following: + +``` +C5 C6 C7 ! +``` + +Hit `ESC`. + +Now try running: + +``` +./jarijyrki < myedits.info +``` + +And observe that it matches what you had in the previous run! + +NOTE: changing the dimension parameters (see the authors' comments) renders +existing spreadsheet files unusable. ## Judges' remarks: -This entry is one of those that makes you wonder why some commercial -software needs tens to hundreds of megabytes to install! This entry -does not simply do the basics, it includes graphing features. All this +This entry is one of those that makes you wonder why some commercial software +needs tens to hundreds of megabytesgigabytes to install! This +entry does not simply do the basics, it includes graphing features. All this program needs now is a flight simulator! ## Author's remarks: -1. OVERVIEW +### 1. OVERVIEW -This program is an X-Windows based spreadsheet program. -The main functions it supports are: +This program is an X-Windows based spreadsheet program. The main functions it +supports are: - * Text cells - * Numeric cells - * Arithmetic operations: + - * / - * Pie charts - * Histograms - * Cell editing - * Formula line - * Dynamic recalculation - * Error detection - * Recursion detection - * Movement within the spreadsheet with cursor keys - * Movement within the spreadsheet with mouse - * Scrolling - * Loading and saving spreadsheets - * Visual style configuration +* Text cells +* Numeric cells +* Arithmetic operations: `+` `-` `*` `/` +* Pie charts +* Histograms +* Cell editing +* Formula line +* Dynamic recalculation +* Error detection +* Recursion detection +* Movement within the spreadsheet with arrow keys +* Movement within the spreadsheet with mouse +* Scrolling +* Loading and saving spreadsheets +* Visual style configuration -2. USAGE INSTRUCTIONS +### 2. USAGE INSTRUCTIONS -2.1. Quick Guide +#### 2.1. Quick Guide -Starting: ./jarijyrki < sheet1.info > myedits.info -Stopping: Esc -Movement: Click mouse or cursor keys -Editing: Currently selected cell is always in edit state. - Press any key to add a character at the end of the - formula; press BackSpace to delete the last one. -Formulas: 123.45 - A1 A2 + - B1 B2 - - C1 C2 * - D1 D2 / -Pie charts: A1 A2 A3 ... An @ -Histograms: A1 A2 A3 ... An ! +##### Starting -2.2. Starting and Loading Spreadsheets +```sh +./jarijyrki < finance.sheet > myedits.info +``` + +##### Stopping + +Use the ESC key. + +##### Movement + +Click the mouse or use the arrow keys. + +##### Editing + +The currently selected cell is always in the edit state. Press any key to add a +character at the end of the formula; press backspace to delete the last one. + +##### Formulas + +``` +123.45 +A1 A2 + +B1 B2 - +C1 C2 * +D1 D2 / +``` + +##### Pie charts + +``` +A1 A2 A3 ... +``` + +Finish the formula with `@` to create the pie chart. + +##### Histograms + +``` +A1 A2 A3 ... +``` + +Finish the formula with `!` to create the histogram. + + +#### 2.2. Starting and Loading Spreadsheets To start the spreadsheet program with an existing spreadsheet, use the following command line: - ./jarijyrki < sheet1.info +```sh +./jarijyrki < finance.sheet +``` -The file sheet1.info has been provided as an example. -This file contains a set of financial numbers and two -graphical entities - a pie chart and a histogram - based -on them. We recommend starting the use of the program -from this file, as a way to study and learn the formula -language supported by the program. +The file [finance.sheet](finance.sheet) has been provided as an example. This +file contains a set of financial numbers and two graphical entities - a pie +chart and a histogram - based on them. We recommend starting the use of the +program from this file, as a way to study and learn the formula language +supported by the program. To start the program with an empty sheet, use +```sh ./jarijyrki < /dev/null +``` -[Alternatively, /dev/zero could be used but that may not exist -on all systems.] +Alternatively, `/dev/zero` could be used but that may not exist on all systems. -2.3. Exiting and Saving Spreadsheets +#### 2.3. Exiting and Saving Spreadsheets -Normally the user obviously wants to edit the spreadsheet. -After the spreadsheet program finishes, it outputs the -edited spreadsheet to the standard output. Hence, when -the spreadsheet window has come up, you've made your changes, -and you press the Esc key the program finishes. To save -the results in a file, the following typical command line -would be used: +Normally the user obviously wants to edit the spreadsheet. After the +spreadsheet program finishes, it outputs the edited spreadsheet to the standard +output. Hence, when the spreadsheet window has come up, you've made your +changes, and you press the ESC key the program finishes. To save the results in +a file, the following typical command line would be used: - ./jarijyrki < sheet1.info > myedits.info +```sh +./jarijyrki < finance.sheet > myedits.info +``` -2.4. Visual Overview +#### 2.4. Visual Overview -On top of the window the Formula Area shows the formula (or text) -of the currently selected cell. The program starts with A1 as -being the current cell. Below the Formula Area is the Column -Letters Area: A, B, and so on. Correspondingly, on the left -side of the window is the Row Numbers Area: 1, 2, and so on. -The rest of the window is dedicated to the actual spreadsheet -cells. +On top of the window the Formula Area shows the formula (or text) of the +currently selected cell. The program starts with `A1` as being the current cell. +Below the Formula Area is the Column Letters Area: A, B, and so on. +Correspondingly, on the left side of the window is the Row Numbers Area: 1, 2, +and so on. The rest of the window is dedicated to the actual spreadsheet cells. -The example spreadsheet, sheet1.info, provided with this -program contains two sets of numbers in the visible area -of the spreadsheet. The top set of numbers forms the -product-by-product turnover breakdown of an imaginary -company. Below it is the yearly development of the -company profits. On the top right corner is a pie chart -showing the turnover breakdown in graphical form, and -on the bottom right corner is a histogram showing the -yearly development. If you scroll the window you can -see additional data from the spreadsheet. +The example spreadsheet, [finance.sheet](finance.sheet), provided with this +program contains two sets of numbers in the visible area of the spreadsheet. The +top set of numbers forms the product-by-product turnover breakdown of an +imaginary company. Below it is the yearly development of the company profits. On +the top right corner is a pie chart showing the turnover breakdown in graphical +form, and on the bottom right corner is a histogram showing the yearly +development. If you scroll the window you can see additional data from the +spreadsheet. -2.5. Movement and Scrolling +#### 2.5. Movement and Scrolling -Use cursor keys to move left, right, up, and down among the cells. -[Note that it is not possible to move around the formula; the -formula can only be edited from its end by adding or removing -characters.] You may also click the mouse on a cell to cause it -to be activated as the current one. +Use arrow keys to move left, right, up, and down among the cells. You may also +click the mouse on a cell to cause it to be activated as the current one. -Going beyond the borders of the window results in scrolling -the current view. It is not possible to go up from first row -or left from the first column; but it is possible to wrap back -to start from the last row and last column. +Note that it is not possible to move around the formula; the formula can only be +edited from its end by adding or removing characters. -2.6. Formula +Going beyond the borders of the window results in scrolling the current view. It +is not possible to go up from first row or left from the first column; but it is +possible to wrap back to start from the last row and last column. -The spreadsheet formulas operate on a stack. Operands of an -operation (e.g. plus) are first pushed to the stack and then -the operation is performed. If a formula on a cell produces -*exactly* one result then that is shown in the cell. Otherwise, -the formula is interpreted as a string and shown as it is. +#### 2.6. Formulas + +The spreadsheet formulas operate on a stack. Operands of an operation (e.g. +plus) are first pushed to the stack and then the operation is performed. If a +formula on a cell produces *exactly* one result then that is shown in the cell. +Otherwise, the formula is interpreted as a string and shown as it is. An example of a simple formula, simply specifying a number is - 123.50 +``` +123.50 +``` Another simple formula refers to a cell: - A1 +``` +A1 +``` -This particular example formula referred to the first cell of -the first row in the spreadsheet. Arithmetic operations require -both arguments: +This particular example formula referred to the first cell of the first row in +the spreadsheet. Arithmetic operations require both arguments: - A1 A2 + - B1 B2 * - C1 C2 - - D1 D2 / +``` +A1 A2 + +B1 B2 * +C1 C2 - +D1 D2 / +``` -More complex formulae can be constructed by combining these -simple ones: +More complex formulae can be constructed by combining these simple ones: - A1 A2 + 2 * +``` +A1 A2 + 2 * +``` -This example calculated the sum of the cells A1 and A2, and then -multiplied the result by two. +This example calculates the sum of the cells `A1` and `A2`, and then multiplies +the result by two. -The currently selected cell is always in a state where it can -be edited. Press any key to add a character at the end of the -formula; press BackSpace to delete the last one. Any resulting -recalculations are immediately visible. [Note how much nicer -this feature is as you get used to it, compared to the behaviour -of certain commercial spreadsheet programs.] +The currently selected cell is always in a state where it can be edited. Press +any key to add a character at the end of the formula; press backspace to delete +the last character. Any resulting recalculations are immediately visible. (Note +how much nicer this feature is as you get used to it, compared to the behaviour +of certain commercial spreadsheet programs.) -2.7. Graphical Formulas +#### 2.7. Graphical Formulas -The program supports two types of graphical representations of the -data in the cells: pie charts and histograms. The pie chart can -consist of any number of slices, and is constructed by putting -the pie amounts in stack and using the @ operator. The program -automatically computes the relative size of the slices. +The program supports two types of graphical representations of the data in the +cells: pie charts and histograms. The pie chart can consist of any number of +slices, and is constructed by putting the pie amounts in stack and using the `@` +operator. The program automatically computes the relative size of the slices. - A1 A2 A3 A4 @ +``` +A1 A2 A3 A4 @ +``` -This example would draw a pie slice of four cells, A1 to A4. +This example would draw a pie chart of four cells, `A1` to `A4`. The pie formula is shown above the pie for reference. -The histograms are drawn in a similar manner, by using the ! -operator: +The histograms are drawn in a similar manner, by using the `!` operator: - A1 A2 A3 A3 ! +``` +A1 A2 A3 A3 ! +``` -2.8. Errors in Formulas +#### 2.8. Errors in Formulas -The program detects recursive reference attempts, references -cells not containing a numerical value, attempts to define -formulas with zero, two, or more results remaining in the stack, -and syntax errors of formulas. Note that typically as the user -types in a formula, it toggles between valid and invalid forms -dynamically as all single character changes are immediately -taken in account. This is not dangerous, just complete the -formula and view the results. +The program detects recursive reference attempts, references cells not +containing a numerical value, attempts to define formulas with zero, two, or +more results remaining on the stack, and syntax errors of formulas. Note that +typically as the user types in a formula, it toggles between valid and invalid +forms dynamically as all single character changes are immediately taken in +account. This is not dangerous, just complete the formula and view the results. -Errors are signalled by showing the formula on a cell instead -of the numerical value supposedly returned by it. +Errors are signalled by showing the formula on a cell instead of the numerical +value supposedly returned by it. Division by zero results in an IEEE Inf number. -2.9. Compilation Parameters and Configuration +#### 2.9. Compilation Parameters and Configuration This section explains the meaning and rationale for the compile time parameters: +--- + +``` -DC=XK_Up -DL=XK_Down -DO=XK_Left -DV=XK_Right -DR=XK_Escape -D_=XK_BackSpace +``` -These definitions can be used to change the user interface -of the program with respect to special keys. The four first -ones define the movement operations and the latter two ones -define the program termination and character deletion keys. -Typical modifications to these parameters include changing -character deletion to the key the user is most familiar with, -which could also be XK_Delete. XK_Escape might be better -in some cases as one of the function keys. Likewise for the -cursor keys. +These definitions can be used to change the user interface of the program with +respect to special keys. The four first ones define the movement operations and +the latter two ones define the program termination and character deletion keys. +Typical modifications to these parameters include changing character deletion to +the key the user is most familiar with, which could also be `XK_Delete`. +`XK_Escape` might be better in some cases as one of the function keys. Likewise +for the arrow keys. +--- +``` -DU=40 +``` -This parameter defines the maximum dimensions of the stored -and handled spreadsheet (but see section 4.4 for a warning -about changing this without thinking about the consequences!). +This parameter defines the maximum dimensions of the stored and handled +spreadsheet (but see section 4.4 for a warning about changing this without +thinking about the consequences!). +--- +``` -DT=98 +``` -This parameter defines the maximum length of a formula in one -cell. Note the warning in 4.4. +This parameter defines the maximum length of a formula in one cell. Note the +warning in section 4.4. +--- +``` -Dz="(T+1)*U*U" +``` -Defines the number of bytes in a spreadsheet file. The number is -automatically adjusted when the spreadsheet size parameters are -changed. Note the warning in 4.4. +Defines the number of bytes in a spreadsheet file. The number is automatically +adjusted when the spreadsheet size parameters are changed. Note the warning in +section 4.4. +--- +``` -DQ=80 -DS=20 +``` -These two parameters define the visual dimensions of a cell. -Changing these may be necessary on your system if the default -font sizes differ from those in the systems we've tested the -program with. S also defines the size of the left (x1) and top -margins (x2). +These two parameters define the visual dimensions of a cell. Changing these may +be necessary on your system if the default font sizes differ from those in the +systems we've tested the program with. `S` also defines the size of the left +(`x1`) and top margins (`x2`). +--- +``` -DN=10 +``` -This is the x-indentation of text inside a cell. Changing -this may be necessary to suit other font sizes and -different X environments. +This is the x-indentation of text inside a cell. Changing this may be necessary +to suit other font sizes and different X environments. +--- +``` -DB=5 +``` -This is the y-indentation of text inside a cell. Changing -this may be necessary to suit other font sizes and -different X environments. +This is the y-indentation of text inside a cell. Changing this may be necessary +to suit other font sizes and different X environments. +--- +``` -DG=23 +``` -This parameter is the number of cell rows visible at one +This parameter is the number of cell rows visible at one time. + +--- + +``` +-Dp=7 +``` + +This parameter is one smaller than the number of cells columns visible at one time. - --Dp=7 - -This parameter is one smaller than the number of cells columns -visible at one time. +--- +``` -DM="((p+1)*Q)+S" -DH="(G*S)+S+S" +``` -These parameters are the window x and y sizes of the spreadsheet -program window. With these definitions, they are automatically -reflecting the at-one-time-visible cell row/column amounts. -Hence, we recommend changing the G and p parameters if you want -to change the window size in normal cases. Experimentation with -M and H can be used to get other types of effect such as adding -a margin also at the bottom of the window. +These parameters are the window x and y sizes of the spreadsheet program window. +With these definitions, they are automatically reflecting the +at-one-time-visible cell row/column amounts. Hence, we recommend changing the +`G` and `p` parameters if you want to change the window size in normal cases. +Experimentation with `M` and `H` can be used to get other types of effect such +as adding a margin also at the bottom of the window. -3. IMPLEMENTATION +--- -It's better to just read the code. But note the use of -stack in the implementation of @ and ! operators, and note -the use of *#i in one of the macros [can you see why?]. -Extreme compression has been the key in writing this -program. With compression have come the use of ASCII code -numbers instead of character constants and so on. [This -particular obfuscation is not really a desirable one as -it is not completely portable. But it certainly was a -necessary one.] +### 3. IMPLEMENTATION -What does or does not "i(=)" do and why? +It's better to just read the code. But note the use of stack in the +implementation of `@` and `!` operators, and note the use of `*#i` in one of the +macros (can you see why?). Extreme compression has been the key in writing this +program. With compression have come the use of ASCII code numbers instead of +character constants and so on. (This particular obfuscation is not really a +desirable one as it is not completely portable. But it certainly was a necessary +one.) -4. WARNINGS AND CAVEATS +What does `i(=)` do or does it do anything? Why? -4.1. X11 Paths in Compilation +### 4. WARNINGS AND CAVEATS -The given build file may have to be edited to insert correct -library and include file path names. +#### 4.1. X11 Paths in Compilation -4.2. Font Sizes +The given Makefile may have to be edited to insert correct library and include +file path names. -We've tested the program with limited amount of X servers. -It is possible that other systems use default font sizes or -other parameters that cause the visual looks to be different -or perhaps even unusable; if this happens, changing compile-time -parameters explained in section 2.8 may help. +#### 4.2. Font Sizes -4.3. Screen Sizes +We've tested the program with limited amount of X servers. It is possible that +other systems use default font sizes or other parameters that cause the visual +looks to be different or perhaps even unusable; if this happens, changing +compile-time parameters explained in section 2.8 might help. -The size of the window as it comes up - a parameter as defined -in compile-time - has been set suitable for a small laptop screen. -Larger screens may benefit from setting these parameters higher. -Smaller screens require changing the parameters so that all of the -window becomes visible. +#### 4.3. Screen Sizes -4.4. Spreadsheet Dimension Changes +The size of the window as it comes up - a parameter as defined in compile-time - +has been set suitable for a small laptop screen. Larger screens may benefit +from setting these parameters higher. Smaller screens require changing the +parameters so that all of the window becomes visible. -The size of the read, manipulated, and stored spreadsheets is -defined by a compile time parameter. However, changing this -parameter is not entirely trivial. The following constraints -apply: +#### 4.4. Spreadsheet Dimension Changes -(a) Horizontal (alphabet) dimension handling will always be -A to Z regardless of the actual allocated memory area. +The size of the read, manipulated, and stored spreadsheets is defined by a +compile time parameter. However, changing this parameter is not entirely +trivial. The following constraints apply: -(b) Any change in the dimension parameter renders existing -spreadsheet files unsuitable. +- Horizontal (alphabet) dimension handling will always be A to Z regardless of +the actual allocated memory area. -4.5. ASCII Reliance +- Any change in the dimension parameter renders existing spreadsheet files +unusable. -The software relies on running on ASCII-based code system. -Why? Because "32" is shorter than "' '". +#### 4.5. ASCII Reliance -4.6. Command Line Single Character Defines +The software relies on running on ASCII-based code system. Why? Because `32` is +shorter than `' '`. -The use of single character (e.g. G or p) for a -D option -may break certain systems, if those characters are used -in the included X header files in certain kinds of places. -If this happens, you may move the offending character to -a new name by exchanging it on the command line and in -the program with another character. Note that there are -*no* free characters in the program currently. +#### 4.6. Command Line Single Character Defines + +The use of single character (e.g. `G` or `p`) for a -D option might break +certain systems, if those characters are used in the included X header files in +certain kinds of places. If this happens, you may move the offending character +to a new name by exchanging it on the command line and in the program with +another character. Note that there are *no* free characters in the program +currently. ## Copyright and CC BY-SA 4.0 License: diff --git a/2000/jarijyrki/sheet1.info b/2000/jarijyrki/finance.sheet similarity index 100% rename from 2000/jarijyrki/sheet1.info rename to 2000/jarijyrki/finance.sheet